List of Engine Sentai Go-onger characters


This is a list of characters in Engine Sentai Go-onger.

Go-ongers

The Go-ongers are based out of the RV known as the Ginjiro-go, named after Saki's family dog, the Go-onger team is composed of the core three and two back-up members who support the main team. Each of the Go-ongers has his/her own role call phrase and a nickname before the group says "Persevering on the Road of Justice! Engine Sentai Go-onger!", saying "Checker Flag" whenever they win thus finishing the episode usually still wearing their suits without theIr helmets. Advertisements for the series show that the first kana in the Go-ongers' surnames spell "ecology" in Japanese. One kanji in each Go-onger's given name contains a variation of the radical for "car". Each of the Go-ongers has a weapon called a Go-on Gear. The Go-ongers each wear a necklace bearing the Go-onger crest, with a colored stone of their respective color in the center. During the events of Engine Sentai Go-onger vs. Gekiranger, after losing their Engine Souls, the Go-ongers learn a new fighting style: Engine Fist.

Sōsuke Esumi

Sōsuke Esumi, the team leader, nicknamed the "Speed King," was formerly a race car driver training under Tojiro Fuji. Possessing a sunny disposition, he was referred to by his racing team as "Miracle Esumi" for his belief in miracles. Unyielding to the point of obstinance and always full of confidence, he confronts all obstacles without hesitation. He is often seen flipping a Go-onger coin for good luck. When Speedor becomes rusted Sōsuke crosses paths with his former mentor, who aids him by reminding him that a miracle takes more than one person to make by himself. He is very protective of his teammates; when Saki expresses that she wants to be pretty for a boyfriend who will appreciate her and makes a date with a young musician not long after, Sōsuke worries that she intends to leave the team to get married. Sōsuke is thought to secretly like Miu Sutō; in GP 30, while under the influence of a Gaiark energy drink, he gives her a ring. After the final battle, Sōsuke returns to racing, but because of his long absence from the racing circuit, he has to start from the bottom as a go-kart driver.

After transforming into Go-on Red, Sōsuke says, "Mach Full Force!! Go-on Red". Sōsuke and Speedor say, "The Burning Crimson Speed Kings!! We are the Go-on Mach Team". With his high speed abilities, he uses the Mantan Gun in Rod Mode to execute the Go-on Thrust, which skewers multiple enemies, and the Spin Rod Crash. With Go-on Blue with the Cowl Laser and Go-on Yellow with the Bridge Axe, he can perform Go-on Bond Spirits with the Rocket Daggers.
During the events of Go-onger vs. Gekiranger, Sōsuke learns an enhanced version of his Saber Straight combined with his own Geki manifested into an image of Speedor, dubbing it the Geki Speedor Saber Straight. His Engine Fist move is the Drrr-Drrr Bullet, performed with the Mantan Gun. With GekiRed and Rio, he can perform the Geki-Rin Engine Bullet. During the events of , Go-on Red uses the Kyoryu Disk on the Mantan Gun to become Hyper Go-on Red. In this form, Go-on Red's Mantan Gun gains the same powers as the Kyoryumaru.
Sōsuke is portrayed by Yasuhisa Furuhara. As a child, he is portrayed by Hiroto Terui.

Renn Kōsaka

Renn Kōsaka, the second in command, nicknamed the "Cyclopedia" for his attention to the smallest detail, is a former bus driver who tends to be somewhat talkative. Because of his doting personality and cooking expertise, he has been referred to as the Go-ongers' "mother" by the other Go-ongers and even his own Engine partner, Bus-on; he takes no offense to and even revels in the reference. The son of a family that runs a beachside inn, Renn, as a young boy, prayed and offered omelettes every day to a guardian statue in the eventually futile hope that his sickly mother would recover. The guardian statue turned out to be the sealed form of the Arerunbra Uzumaquixote, which Renn learned only after Kitaneidas and Kegareshia tried to claim it. Renn carries a small memo notebook, which is the source of his massive knowledge; in it, he jots down notes about and draws doodles of the enemies the team faces, even in the middle of a fight. Not only is Renn the "mother" of the team, but he is also the chief technician; he made modifications to the Engines so they could come together in the G6 and G9 formations, developed the Kyuyu Soul and the Kankanbar, and assisted the Go-on Wings in fine-tuning the Go-Roader GT. After the final battle, Renn becomes Sōsuke's mechanic in the go-kart racing circuit.
As Go-on Blue, Renn's physical strength is magnified. After transforming into Go-on Blue, Renn says, "Just Correct!! Go-on Blue". With the Mantan Gun in Rod Mode, he can execute the Go-on Drift. With the Mantan Gun in Gun Mode he can execute the Sniper Shoot. His Engine Fist move is the On-on Bullet.
Renn is portrayed by Shinwa Kataoka. As a child, he is portrayed by Shunpei Ijuin.

Saki Rōyama

Saki Rōyama, nicknamed the "Sweet Angel," was a concessions vendor who worked the stands of the Twin Ring Motegi racetrack. Cheerful and eager, she smiles and remains upbeat even in times of crisis, and exhorts her teammates to do the same. This is reflective of her personal mantra, "smile, smile," which she learned from a woodland spirit that she met when she was younger. While she and Hanto are trapped in Junk World, she reveals that she dreams of opening a cake shop someday. Her Go-Phone has multiple charms on it, differentiating it from the boys' Go-Phones. She has an older sister named Sanae, a manipulative and devilish woman who often tormented her when they were younger and continues to make trouble for her in the present time. After the final battle, Saki goes to work at a cake shop before joining the other Go-ongers in travelling across the Braneworlds to defeat any remaining members of the Gaiark.
After transforming into Go-on Yellow, Saki says, "Smile Blooming!! Go-on Yellow". In the G3 Princess idol group, she says, "The 3 G's are together today as a unit!! G3 Princess". She can fight in any hard terrain, using the Mantan Gun's Rod Mode to execute the Go-on Spin. With the Mantan Gun in Gun Mode, she can execute the Machinegun Shoot. As part of G3 Princess with Go-on Silver and Kegalesia, she performs the Princess Cannonball after performing the G3 Triangle which passes the ball made by them. In the Go-on Princess, they say, "With the maidens prayer, we come into this world of flowers to make it a world of justice!! We three are the Go-on Princess!". As part of Go-on Princess with Go-on Silver and Bearrv, she performs the Princess Triple Attack and Princess Triple Punch. Her Engine Fist move is the V-V Bullet.
Saki is portrayed by Rina Aizawa. As a child, she is portrayed by Asumi Kikuchi.

Hanto Jō

Hanto Jō, nicknamed the "Vagabond," is a freeter working part-time at the Doki Doki Pizzeria until Gunpei's actions cost him his job. He becomes a Go-onger when he helps Gunpei return the Engine Casts to the others. Enthusiastic, kind-hearted, but immature, Hant seems to always have a part-time job of some sort; one of these was at a crepe stand so that he could talk with girls his age. Hant's love of amusement parks prevents him from getting nauseous when Birca uses his Bircutter. After the final battle, Hant is a freeter once again, and again working for the Doki Doki Pizzeria.
After transforming into Go-on Green, Hant says, "Doki Doki Delight!! Go-on Green". One of his attacks is the Cycle Punch. His Engine Fist move is the Bir-Bir Bullet.
Hanto is portrayed by Masahiro Usui.

Gunpei Ishihara

Gunpei Ishihara, nicknamed the "Chaser," is a former police officer with excellent marksmanship and a passion for justice. His code name as a police officer was "Handsome Detective," and he passed himself off as such until his former partner revealed that Gunpei had never been a detective. After witnessing the primary Go-ongers in their first battles against the Gaiark, Gunpei quits the police force; because the police had considered the Gaiark out of their jurisdiction, Gunpei decided that the police had lost their sense of justice. He eventually finds out the Go-ongers' true identities and demands to become one himself, going so far as to kidnap Bomper and steal the Engine Casts to achieve that end. After learning how and why Sōsuke, Renn, and Saki were chosen, he decided to return the Engine Casts to them and, along with Hanto, was made a Go-onger by Bomper. Though he tries to come across as cool and serious, Gunpei is actually very insecure and, especially when he is around Hanto, can be quite buffoonish. After the final battle, Gunpei returns to the police force and finally becomes a detective.
Gunpei initially belittles Sōsuke, Renn, and Saki for being "just" kids and claims that he is "a man more qualified to be a Go-onger." Though Kenji Ebisawa, the actor who portrays Gunpei, is indeed older than Rina Aizawa and Masahiro Usui, who plays Saki and Hanto, he is, ironically, younger than both Yasuhisa Furuhara and Shinwa Kataoka, the actors who play Sōsuke and Renn respectively.
After transforming into Go-on Black, Gunpei says, "Dash Dynamic!! Go-on Black". His Engine Fist move is the Ganga Ganga Bullet.
Gunpei is portrayed by Kenji Ebisawa.

Go-on Wings

The Go-on Wings are a two-man team composed of the Sutō siblings, who came from a Plutocratic lifestyle and chosen by the Wing Clan Engines due to their esper abilities, brought to the Machine World to become an elite fighting force under Jum-bowhale's guidance before the Go-onger team came to be. However, it is due to their training that the Go-on Wings see the Go-ongers as being too inexperienced to protect the Earth from Gaiark. However, after learning from Jum-bowhale about what truly made the Go-ongers who they are, the Go-on Wings join the Go-ongers as comrades. Living at their villa, the Sutō siblings come to the Go-ongers' aid whenever they feel an evil presence making its move. After transforming, they say "Take Off! Go-on Wings", with their victory quote "Touch Down." The Go-on Wings each wear a necklace bearing the Go-on Wings crest and are fearful of ghosts since being told scary ghost stories by their grandfather. After the final battle, the Sutō siblings resume their family duties in high class society, though Hiroto was a bit reluctant to accept this role. With the Go-ongers, the groups' surnames spell "ecologist". The two siblings' names both include the radical for feather. In Go-onger vs. Gekiranger, the two also learn to fight using the Fierce Beast-Fist Beast Arts style from Gorie Yen.

Hiroto Sutō

Hiroto Sutō, nicknamed the "Philosopher," is the cool and aloof leader of the Go-on Wings, and is amazing in combat. He trains extensively in boxing and kickboxing and possesses an esper ability that allows him to sense when danger is near. His seemingly cold exterior belies his fiery passion; he tells the Ancient Engines that, like them and like the Go-ongers and his sister, he will put his life on the line to protect those that he cares about. Because of this, and a separate incident which saw him care for a Wameikle from Sound World, the Go-ongers tab him as their "father." Hiroto, however, is not amused in the least by the reference, unlike Renn, who enjoys being the Go-ongers' "mother." During the Christmas incident, Hiroto, with encouragement from Saki, manages to overcome his deeply seated fear of ghosts.
After transforming into Go-on Gold, Hiroto says "Break the Limit!! Go-on Gold". With the Rocket Dagger, he can perform the following attacks: Burning Dagger, Lightning Dagger, Shining Dagger, Freezing Dagger, and Full-Power Dagger.
Hiroto is portrayed by Hidenori Tokuyama, he previously portrayed the anti-hero Sou Yaguruma in Kamen Rider Kabuto. As a child, he is portrayed by Shogo Ehara.

Miu Sutō

Miu Sutō, nicknamed the "Lovely Sensation," is Hiroto's younger sister. A girl with a bit of a princessy attitude, her fighting style is aikido. Like Hiroto, Miu possesses an esper ability; it allows her to see things though the flowers she tends to. She idolizes and is severely dependent upon her brother, who she always addresses as "Ani". She has a tendency to try to "improve" those she sees as lesser than she is, which Hiroto refers to as her "bad habit." Though she initially had little regard for Saki, Miu eventually becomes good friends with her. Miu also develops a bit of a love on Sōsuke, though, at first, she is hesitant to acknowledge it. She later helps Saki and Renn in regaining their courage by telling them how they changed her and her brother for the better. Miu appeared as a fashionably dressed young woman in the final episode of Kaizoku Sentai Gokaiger, receiving her powers back in the form of the Go-On Silver Key as the Gokaigers left Earth.
After transforming into Go-on Silver, Miu says "World Sparkling!! Go-on Silver". With the Rocket Dagger, she can perform the following attacks: Freezing Dagger, Shooting Dagger, and Full Power Dagger. As part of G3 Princess with Go-on Yellow and Kegalesia, she performs the Princess Cannonball after performing the G3 Triangle which passes the ball made by them.
Miu is portrayed by Yumi Sugimoto. As a child, she is portrayed by Airi Yoshida.

Bomper

Bomper is a pink radar robot created by Jum-bowhale from the Machine World, supporting the Go-ongers by creating their arsenal and performing maintenance on the Engines. Everything relating to Bomper involves the number 66. All of his dimensions are 66 cm, weighing 66 kg with a top speed of 66 km/h. Bomper also reveals that his name is an acronym for "Born-to Outerdimension and Mechanic × Pitcrew-type ENGINE-support Robot." As Bomper is from the Machine World, he ends his sentences with "Bom-Bom!". Before settling on Bomper's pink-and-white color scheme, Jum-bowhale had originally designed him to be covered with colorful dots.
Bomper is voiced by Akiko Nakagawa.

Arsenal

The Go-ongers' technology revolves around the Engine Soul, which is a chip-like item that holds the soul of an Engine, whose power they allow the Go-ongers to employ. When not in use, they are kept in the Engine Soul Holster.
The Go-ongers' mecha are the Engines, denizens of Machine World with some of them pursuing the Barbaric Machine Clan Gaiark, choosing the Go-ongers as their partners to fight the Gaiark with them. While in the Human World, the Engines cannot exist in their full size and thus remove their Engine Souls to assume small forms called Engine Casts which are kept in the Engine Attache until they are needed, resuming their true size on Earth for only 10 minutes, or suffer fatal rusting. But to fight, the Engines need the aid of humans to resume their true forms, with their hearts allowing the Engines to assume more powerful forms. Among Engines are two races, the large Gian Race that can combine with other Engines and the rare Wing Race that are masters of aerial combat. After the defeat of Yogoshimacritein, the Engines depart back to their homeworld until Speedor later returns to ask their partner to aid them again with the Gaiark President.
While as Engine Souls, they can communicate via any henshin device to give advice to the Go-ongers and the Go-on Wings, appearing as cartoony holograms with features like teeth, mouths, and other body parts not present as an Engine.
With the Origami, the Engines can execute the Modikara Cannonball attack.
  1. Engine Speedor is Go-on Red's partner, a hybrid between a condor and a racing car who ends his sentences with "Drrrr Drrrr!". When fully introducing himself, Speedor says, "Full tank of courage! The highway star! Engine Speedor". His engine pipes spout out flames in his Speedor Burst attack. His speed is unmatched and able to travel the length of Japan at full speed of 1000 km/h within three hours. Speedor can assume "Accel Full Throttle", a "semi-flying" mode where Speedor uses his talons for attacks, but he can only glide. He forms the upper body and head of Engine-Oh. In episode 36 of Kaizoku Sentai Gokaiger, it is revealed that Bearrv married Speedor, having a son, named Machalcon, that joins the Gokaigers as their Engine partner as well as a representation of the Go-ongers ultimate power for the Gokaigers. Speedor is voiced by Daisuke Namikawa. Namikawa previously voice N Ma, the main villain in Mahou Sentai Magiranger.
  2. Engine Bus-on is Go-on Blue's partner, a hybrid between a lion and a bus who is the Edokko spirit of the group and ends his sentences with "Onon Ooonn!". He is able to hold 100 to 200 people in his body. When fully introducing himself, Bus-on says, "The chic and gallant safe ride! I'm Engine Bus-on". He has brute strength and the Bus-on Missiles. He uses his destination sign as a secondary form of communication, changing it to say words such as "Stop" and "Fire!" He forms Engine-Oh's hip, legs, and Go-on Sword. Bus-on is voiced by Hisao Egawa.
  3. Engine Bearrv is Go-on Yellow's partner, a gutsy hybrid between a bear and an 4WD truck who speaks Kansai-ben and ends her sentences with "Vvvvv Vvvv!". When fully introducing herself, Bearrv says, "The loving and compassionate tough girl! I'm Engine Bearrv". Her spunky pep is due to her not being a picky eater, eating even enemy aircraft in her Bearr Attack, and her technique is Bearr Press and V V Missiles. She previously had romantic feelings for Jetras, though her impression of him as a strong person is ruined due to the Nigorl incident. She forms Engine-Oh's lower body and V-Shield. In episode 36 of Kaizoku Sentai Gokaiger, it is revealed that Bearrv married Speedor, having a son that joins the Gokaigers as their Engine partner as well as a representation of the Go-ongers ultimate power for the Gokaigers. Bearrv is voiced by Miki Inoue.
  4. Engine Birca is Go-on Green's partner, an easy-going hybrid between an orca and a motorcycle with a fondness for foreign words, having used Spanish, Italian, French, English, and Mandarin Chinese terms so far. He ends his sentences with "Bar Barrrca!". When fully introducing himself, Birca says, "The easygoing dreamer! I'm Engine Birca". He is best at quick movements, though can be stubborn and rush into things without second thought. In battle, Birca uses his tail, the Bircutter as a weapon. He forms a left arm in formations, bestowing them with his slicing abilities as well as part of Engine-Oh G12's right foot. Birca is voiced by Sōichirō Hoshi.
  5. Engine Gunpherd is Go-on Black's partner, a lone-wolf hybrid between a German Shepherd and a police car who ends his sentences with "Ganga Gaaaan!". When fully introducing himself, Gunpherd says, "The hard emergency dispatch! I'm Engine Gunpherd". Known as a sniper for his cannon nose, the Gunpherd Gun, Gunpherd pursues enemies in a hot chase with an equally burning sense of justice and precise sense of smell. He was a bit annoyed with Gunpei, chastising him once for having three stray bullets when they scrapped Speaker Banki. He forms a right arm in formations, bestowing them with his sniping abilities or part of Engine-Oh G12's left foot. Gunpherd is voiced by Kenji Hamada.
  6. Engine Carrigator is a hybrid of an alligator and a semi-trailer truck with a samurai persona, able to carry two Engines on his back. He ends his sentences with "Geta Gaaaatoor!". When fully introducing himself, Carrigator says, "The giant star! I am Engine Carrigator". Being of the powerful and legendary Gian Clan, Carrigator can combine with any Engine without the need of a human partner. Though he came on Earth to fight the Gaiark, he teams up with Hanto and Gunpei to understand the concept of "partner". His only known flaws are that he takes much more time being charged than the other Engines, as well as being a voracious eater. He forms the main body and head of GunBir-Oh and the feet of Engine-Oh G6, G9, and G12, as well as the helmet of Engine-Oh G6. Carrigator is voiced by Kyousei Tsukui.
  7. Engine Toripter is Go-on Gold's partner, a hybrid of a chicken and a helicopter with a lively prankster personality who is a master in aerial dogfights while ending his sentences with "Batabata Bata!". When fully introducing himself, Toripter says, "Flying free. Tricky! I'm Engine Toripter". He is one of the two Wing Clan Engines who arrived to the Human World before Speedor and the others. With his rotor blades, he can perform the Toripter Batariot, firing an endless supply of bullets from his turrets. He can form the right arm in formations as well as the right shoulder of Engine-Oh G9 and G12, with his tails forming "goggles" for Speedor. Toripter is voiced by Shizuka Ishikawa.
  8. Engine Jetras is Go-on Silver's partner, a streamlined hybrid of a tiger and a fighter jet with a calm personality and ends his sentences with "Geeeeeeeeeeen!". When fully introducing himself, Jetras says, "The silver air master! I'm Engine Jetras". He is one of the two Wing Clan Engines who arrived to the Human World before Speedor and the others. Jetras has the utmost respect for Jum-bowhale. With his wings and amazing offensive abilities, he can fire the Jetras Torahawk cruise missile from his mouth. He can execute the Jetras Phantom attack where he creates clones to confuse the enemy. He can form the left arm when in formations as well as the left shoulder of Engine-Oh G9 and G12, with his rudder and elevators forming G9's helmet and part of G12's helmet. Jetras is voiced by Kiyotaka Furushima.
  9. Engine Jum-bowhale is a hybrid between a baleen whale and a jumbo jet, with a French accent and ends his sentences with "Bowhaaaaaale!". When fully introducing himself, Jum-bowhale says, "Everything about me is first class. He is the Go-on Wings' Instructor and a veteran fighter who leads the Wing Engines, forming the main body of Seiku-Oh and the back of Engine-Oh G9 and G12. Jum-bowhale can execute the Bowhale Beam attack where he sprays water from his back, as well as assume Flying wing for highspeed tackle attacks. In his Soul form, he has a captain's hat and his moustache is more visible. Jum-bowhale is voiced by Tomomichi Nishimura.
  10. Engine Kishamoth is a hybrid between a mammoth and a steam locomotive, one of the Ancient Engines that battled the Horonderthal before entering a deep sleep as the "Golden Dragon", which is the train formation that the Ancient Engines formed with Kishamoth in the lead. Because he and the other Ancient Engines came to the Human World during the time of the dinosaurs, which was called Dino World at the time, they are unable to speak the human languages like the modern Engines. However, Kishamoth has a peaceful nature in spite of trying not to sound rough, and he easily trusts both the humans and the modern Engines. The onomatopoeic description of Kishamoth's trumpeting is "Pao pao!!". When fully introducing himself, his trumpets are translated as "Departing from ancient times, full speed ahead. Engine Kishamoth". His nose spouts out freezing mist in his Ice Age Express attack. He can break his body to either form the head, torso, and arms of Kyoretsu-Oh or form the hip armor, "face armor" for Buson, and part of the feet of Engine-Oh G12, with its head forming part of G12's helmet.
  11. Engine T-line is a hybrid between the Tyrannosaurus rex and the Shinkansen, one of the Ancient Engines who has an intense hatred for the Savage Machine Clans. He is the more primitive of the three. The onomatopoeic description of T-line's roars is "Gao gao!!". When full introducing himself, his roars are translated as "Going up. Engine of wishes, T-line". While forming the middle car of their train formation, T-line forms the right leg of Kyoretsu-Oh and right arm of Engine-Oh G12.
  12. Engine K-line is a hybrid between the Triceratops and the Shinkansen, one of the Ancient Engines whose talent is in charging, breaking through anything with his three horns. The onomatopoeic description of K-line's roars is "Gyao gyao!!". When fully introducing himself, his roars are translated as "Going down. Engine of Light, K-line". While he forms the back car of the Engines' train formation, K-line also forms the left leg of Kyoretsu-Oh and left arm of Engine-Oh G12.

    Engine combinations

The Go-ongers' four Engine robots and Go-Roader each have a role call phrase and a nickname which they say when fully introducing themselves, before the group says "Invincibility's Thundering Sound! Go-on All-Stars!". Four Engine robots and Go-Roader can perform co-operative attacks such as the Go-on Kick and the Go-on Punch.

Engine-Oh

Engine Gattai Engine-Oh is the Go-ongers' primary robot, referred to as the "Giant King of Engines". Its finisher is the Go-on Grand Prix where Engine-Oh charges the enemy at full speed with its Go-on Sword, landing the deathblow as it moves past. It has the V Shield. With GunBir-Oh and Seiku-Oh, it can perform the following finishers: Go-onger Storm, Triple Punch, and Grand Prix Festival.
It is composed primarily of Speedor, Bus-on, and Bearrv, but can receive power-ups by performing Engine Armaments:
Engine Gattai GunBir-Oh is the Go-ongers' secondary robot formed from Birca and Gunpherd combining with Carrigator, referred to as "Another King of Engines". Its attacks are the Bircutter Storm and Bircutter Wrist Return. Its finisher is the GunBir Grand Prix, for which Carrigator says "Herculean Strength Unrestricted", then performs a 3-fold attack with its Engines. GunBir-Oh can also execute the Gunpherd Gun and Bircutter Slash. With Engine-Oh and Seiku-Oh, it can perform the following finishers: Go-onger Storm, Triple Punch, and Grand Prix Festival.
G6 Formation Engine Gattai Engine-Oh G6 is the combination of Engine-Oh and GunBir-Oh, created when Renn modified the GunBir-Oh components for a new G6 Formation based on Carrigator's fusion ability and Bomper's knowledge of Engines. The "G6" stands for "Go-onger 6." Its attack is the G6 Kick and its finisher is the G6 Grand Prix where it fires all of its weapons in energy form at the enemy.

Seiku-Oh

Engine Gattai Seiku-Oh is the combination of the winged Engines Toripter, Jetras, and Jum-bowhale, referred to as the "Sky Punching Aerial King". Its attacks are the Toripcutter, Jetras Boomerang, Jetori Turbulence, and Seiku Sonic. Its finisher is the Seiku Impulse. With Engine-Oh and GunBir-Oh, it can perform the following finishers: Go-onger Storm, Triple Punch, and Grand Prix Festival.
G9 Formation Engine Gattai Engine-Oh G9 is the combination of Engine-Oh, GunBir-Oh and Seiku-Oh, which is referred as the "Air and Earth Reigning King", achieved after Bomper and Jum-bowhale remodel the Wing Engine casts. It was used once the Go-on Wings finally join the Go-ongers. Its finisher is the G9 Grand Prix, a stronger version of the G6 Grand Prix.

Kyoretsu-Oh

Engine Gattai Kyoretsu-Oh is the combination of the three Ancient Engines, referred to as the "Powerful King of Trains", piloted by Go-on Red, who apparently understands them. Extremely powerful, Kyorestu-Oh uses Kishamoth's ability to shoot out a gust of cold air from his trunk, which is cold enough to cool magma. Its attacks are the Railway Chop, Dinosaur Kick, Kyoretsu Dino Bite, and KishamoSteam. Its finisher is the Kyoretsu Express where it uses the freezing mist to execute a burning-chop attack.

Engine-Oh G12

G12 Formation Engine Gattai Engine-Oh G12 is the combination of all 12 Engines, the largest Engine combination made with a height of 93m and a weight of 12000t referred to as the "Ultimate King Who Triumphs Over Evil". Due to its massive weight, the formation lasts for a few minutes. Its attacks are the G12 Punch and G12 Kick, while its initial finisher is the G12 Grand Prix where it generates aura versions of Engine-Oh, GunBir-Oh, Seiku-Oh and Kyoretsu-Oh to attack the enemy before charging while generating an incinerating aura. G12's ultimate attack is the G12 Final Grand Prix where it temporarily transforms into a massive bird of flame that bursts through the opponent. With SaiDaiGekiRinTohja, it can perform the Engine Beast Grand Prix finisher.

Engine-Oh G7

Miracle Engine Gattai Engine-Oh G7 is the combination of the seven Engine partners of the Go-ongers and Go-on Wings. Its finisher is the 10 Years Grand Prix.

Go-Roader GT

Armored Wheel Go-Roader Gran Turismo is the wheel-like robot referred to as the "Running Wheel of Justice" created by Hiroto and Jum-bowhale, appearing as a palm-sized wheel and in the development stage due to the defective Power Souls created by Hiroto to activate it, causing the Go-Roader to go on a rampage. However, with the Tokon Soul developed by Renn, Go-Roader can enlarge and can assume a humanoid Action Mode as well as change into a Wheel Mode to execute the Go-Roader Strike attack with Engine-Oh G9 or Engine-Oh G12's energy. Action Mode's attack is the Go-Roader Kick. Another feature of the Go-Roader is its ability to house an Engine Soul to assume a human-sized Action Mode with the mind of the very Engine controlling it. However, staying too long in Action Mode exhausts the Engine's energy over a period of time. A human-sized Wheel Mode can perform the Go-Roader Attack finisher.

Samurai Formation 23

The Samurai Formation 23 is a formation between Samuraihaoh and Engineoh G12 in . In this form, Shinkenoh, Daikaioh, Mougyudaioh, Kyoretsu-Oh and Engine-Oh G9 use the IkaTenku Buster to perform the Samurai Engine Super Grand Release finisher.

Barbaric Machine Clan Gaiark

The Barbaric Machine Clan Gaiark, the antagonists, are machine-men from the Machine World whose numbers are scattered during their war with the Engines. By the end of the series, only Batcheed, Babatcheed, and Chirakazky remained at large until the events of Shinkenger vs. Go-onger and later in Kaizoku Sentai Gokaiger.

Pollution Ministers

Originally thought to be the last of the Gaiark, the three Pollution Ministers end up on Earth and decide to pollute it to serve as an ideal paradise for them. They based themselves at Hellgailles Palace, located on an isolated island in the middle of the sea. Powering the entire place is the , though revived, the Pollution Ministers want nothing to do with Batcheed's plan and spend their time at Genta's Gold Zushi stand before running off back into bottom of the Sanzu River. The Ministers also make an appearance in the '' as captives in the Makuu Prison for giving up their lives of villainy before being released by the Gokaigers.

Kegalesia

Minister Kegalesia is the human-looking general with the Kegastick who leads the Gaiark's sea-based Barbaric Machine Beasts. She has artificial human-like skin that regenerates and shoots steam from the projections on her back armor if she is in a foul mood, and the handle on her head cuts off this leakage. She ends her sentences with "Ojaru", is a heavy drinker who hates to be called "Old Lady", sometimes enlarging from the anger being too much to fume out. While under the guise of Rena Kegareshi, Kegalesia develops a vendetta against Hant due to his falling in love with her guise and calling her loving things, like "pure," which are offensive to members of the Gaiark. It was this taboo that she could never fall in love with Nigorl, as his ideas were the opposite of the Gaiark's. While the Go-ongers were trapped in Samurai World, Kegalesia accidentally separates her Kegalesia Soul from her body, with her soul set into Bomper by the other Ministers to convert the robot into Bompelesia so they can take advantage of the situation by setting a trap. However, Bomper manages to regain control and ejects the Kegalesia Soul prior to being reinstalled back in her body. She occasionally joined Saki and Miu in the 3-girl idol group G3 Princess, though the second time ended with her enlarging and being knocked into the distance by Engine-Oh G12. When Yogoshimacritein arrives, Kegalesia is reduced to a mere henchman forced to obey him. She is annoyed when Yogoshimacritein uses her and Kitaneidas as human shields against the Go-onger's attacks, seeing him for what he is and his methods not to her liking. As an act of defiance against the dictator, she helps in destroying the Infinite Wastebin before she was heavily damaged by Yogoshimacritein. She gives the location of the Deus Haguru Magear to Go-on Red, Blue, and Yellow before shutting down.
During the events of Shinkenger vs. Go-Onger, she is the one who reveals the location of Batcheed's Batchirium Plant to the heroes.
Due to her nature as a Water Pollution branch member, she can execute Water Pollution Fusion with any member of the same branch, boosting up their power as a result. Before entering battle, Kelgalesia says, "The muddied and fetid waters! I am Water Pollution Minister Kegalesia!". After transforming into her true form as part of the one-time only G3 Princess idol group, Kelgalesia says, "Love me or Regret it!! Kegalesia". As part of G3 Princess with Go-on Yellow and Silver, she performs Princess Cannonball, after performing G3 Triangle which passes the ball made by them.
She reappears in along with Saki and Miu.
Kegalesia is portrayed by Nao Oikawa.

Kitaneidas

Minister Kitaneidas leads the Gaiark's sky-based Barbaric Machine Beasts and uses the Kitaneibar as his weapon and can turn himself into smog as well as execute his Air Pollution Attack. He is the best card player among the three ministers and ends his sentences with "Zoyo". He experimented with Bikkurium's potent abilities prior to using it on Barbaric Machine Beasts. Kitaneidas is reduced to a mere henchman when Yogoshimacritein arrives and is forced to obey him. He is agitated when Yogoshimacritein uses him as a human shield against the Go-ongers, and as a final act, he destroys the Infinite Wastebin before he is forced to shut down by Yogoshimacritein.
Before entering battle, Kitaneidas says, "The blackened skies! I am Air Pollution Minister Kitaneidas!".
Kitaneidas is voiced by Mitsuaki Madono.

Yogostein

Hiramechimedes
Land Pollution Vice-Minister Hiramechimedes is Yogostein's subordinate and the Gaiark's top tactical genius, a more serious threat than the Pollution Ministers. Whenever inspired with a plan, the 3 light bulbs on his head flash as he says "Pok-Pok-Ping!" with the sextant and protractor on his chestplate indicating the plan's greatness. Originally a second-rate inventor of many of the Gaiark group's arsenal, he plotted to assassinate Yogostein to become the new Land Pollution Minister and be somebody. However, after seeing his brilliant mind recognized by Yogostein as he awards him with the yardstick-stylized sword Hacalibur and his title on the day the Gaiark attack Machine World, Hiramechimedes devoted himself to his master's cause without question as he became feared by the Engines, making them frightened husks of their former selves in his numerous victories which they eventually overcame. However, on the day the Gaiark were expelled from Machine World, Hiramechimedes mysteriously disappeared during the fight only to resurface months later on the Human World to serve under Yogostein again after settling some loose ends with the Wing Engines as he thought he had handled, only to be once more pursued by them and the Go-on Wings.
Eventually, Hiramechimedes, along with Yogostein and Bōseki Banki, stages his apparent banishment from Hellgailles palace as part of a plan to deceive the Go-ongers and kill Go-on Gold. However the plan goes wrong yet again with the arrival of Engine-Oh G9 and Hiramechimedes refuses to return to Yogostein out of shame, spending long days of calculation for a means to kill the Go-ongers. After a vain attempt to destroy the Go-on teams, Hiramechimedes finally finds the answer he had been looking for: to beat the Go-ongers at their own game with raw power rather than with intellect. To that end he sneaks back into Hellgailles Palace and, in spite of Yogostein's pleas, infuses himself with a hundred times the Bikkurium amount that a Savage Machine Beast needs for "Industrial Revolution". In consequence, the stress of this destroyed Hiramechimedes' mind as he upgrades into a more powerful and insane babbling form called Detaramedes. Though he almost defeats Engine-Oh G9 after executing "Big Industrial Revolution", Detaramedes' downfall comes from Sōsuke's reckless refusal to give up. In the end, Go-on Red scraps Detaramedes with only the Hacalibur remaining for Yogostein to pick up.
However, while the Go-ongers visit a shrine in the woods, they encounter Hiramechimedes' ghost, referring to himself as Urameshimedes, as his malice towards the Go-ongers kept him from passing on. Unable to regain physical form, Urameshimedes made a detour to Samurai World to recruit the aid of Bakki to help him by physically harming the Go-ongers in return to allow him to destroy the forest. But when everything didn't work out as planned, Urameshimedes possesses Bakki's body as Hirameki Bakki and enlarges it to kill the Go-ongers. However, the Go-on teams manage to use a G9 Grand Prix laced with salt on the two so the attack would not only kill Bakki, but exorcise Hiramechimedes in the process.
Hiramechimedes has a cameo appearance during the closing credits of where he drowns in Sanzu River while the other three ministers sink to its bottom.
His attacks have a calculus theme from his Pi Beam to his sword-based Equilateral Triangle Slash, Isosceles Right Triangle Slash, Acute Triangle Slash, and Hirameki Kill-Factor: Pythagorean Theorem attacks. As Detaramedes, his uses a variety of attacks with a miscalculation theme such as Hissatsu: Root 3 - Base ÷ Diameter, 10 - 4, 6 + 9, Detarame Kill-Factor: Bikkurium Beam, Detarame Kill-Factor: Brain Freeze Slash, and Detarame Kick-Punch-Chop-Slash. Before entering battle, Hiramechimedes says, "Pok-Pok-Ping! and I have a flash. Land Pollution Vice-Minister Hiramechimedes!".
In the It's a Seminar! Everyone GO-ON!! special DVD it is reveal that Hiramechimedes has an older, cross dressing brother named Kokorootomedes. He has a very flamboyant in personality and often asserts his femininity, seeing himself as a maiden. Armed with the Kiradecolibur that is a decorated version of Hiramechimedes' Hacalibur, Kokorootomedes challenges Go-on Red to avenge his younger brother. At first, Kokorootomedes uses his feminine wiles and his two attacks on his opponent, Fashion police and Lovely Sparkling Pentagon, Star Heart Slash. But once man-handled by Go-on Red, Kokorootomedes upgrades into a powerful berserker form, becoming a Yakuza-type in personality with his crazed Hissatsu: Ruless Battle attack that lets him fight dirty. In the end, he is scrapped by Go-on Red using the Kankanbar Mantangun on him, lamenting on his desire before rethinking that it wasn't well worth his death.
Both Hiramechimedes and Kokorootomedes is voiced by Kazuya Nakai.

Yogoshimacritein

Minister Yogoshimacritein is the black/gold armored Insurgant Highness that wields a double-ended Kanabō-like weapon and Yogostein's father, ending his sentences with "Narina". Being the total opposite of his son and most ruthless of the Gaiark, Yogoshimacritein desired to rule all the Braneworlds, playing part in forcing the Gian Race Engines into the verge of extinction and oversaw the destruction of the three Braneworlds by Kireizky. After Kireizky's death, Yogoshimacritein uses his fallen minion's Bottomless Wastebin to enter the Human World, using it as a means to feed from in order for him to use his signature inhereditary attack Justice Dissolution, which can convert those it hits into wavelengths as long as the Deus Haguru Magear is active. He uses it to take out Hant, Gunpei, and the Go-on Wings, along with their Engine partners, Carrigator, Jum-bowhale, and the ancient Engines. His other attacks are, who also voices Yogostein.

Kireizky

Cleaning Minister Kireizky is one of the Gaiark's ministers, who "cleans" the slate of Braneworlds he has visited, destroying the Sound World, the Magic World, and the Prism World to acquire a special energy called Dokkirium. Arriving in the Human World, Kireizky intervened during Engine-Oh G9's fight with Bin Banki before formally introducing himself. Kireizky is armed with Seven Cleaning Tools such as Duster Blade with which he can execute the Dust Trash, Tying Sleeves, and Round Moon Slash attacks. His other weapons are Broom, Floorcloth that can absorb Engine-Soul based attacks and send them back to knock them out or be wrung into the Rag Grenade, the Dustpan, and Cotton swab. His sixth weapon, the Bottomless Waste container, allows him to manipulate space itself from evading an enemy attack to sending them far away with Vacuum Full Power. But once losing the wastebin, Kireizky swallows the Dokkirium he gather to undergo Super Industrial Revolution before using the strongest of his seven weapons, the Bucket. Though he overpowered the Go-ongers, the tables turn when the entire team is reassembled and Kireizky is finally scrapped by Engine-Oh G12. However, his Wastebin ended up at the Hellgailles Palace, still active as Yogoshimacritein and Chirakasonne emerge from it. His name is from the Japanese word for "tidiness".
Kireizky is voiced by Eiji Takemoto, previously the voice of Rouki in Hyakujuu Sentai Gaoranger.

Chirakasonne

Danger Cabinet is Yogoshimacritein's Boiler-based right-hand man in bulky armor who ends his sentence with "nonne". He is a user of kenpō named Natural Litter Constitution and his trademark attack is the Natural Reversal, ingesting the energy attack of an opponent and reflecting back. His other attack, Natural Unnecessariness, produces a shockwave that levels buildings to the ground. Once the Go-ongers found a means to counter his signature move, Chirakasonne ingests Dokkirium and defeats both Engine-Oh and Seiku-Oh easily. But GunBir-Oh turns the tables and overloads Chirakasonne with its attack.
Chirakasonne is voiced by Bin Shimada, previously the voice of Satarakura in Ninpuu Sentai Hurricanger.

Batcheed

Pollution '' and ends his sentences with "de aru". He has been conquering the Gunman World when he comes across the Go-ongers and battles them before intending to enter the Human World. When they are all sent through a dimensional rift to the Human World, Batcheed joins forces with the Gedoushu so he can use their Sanzu River's water to complete the Batchrium Plant on the moon's surface which can pollute all the Braneworlds. His attacks are Batcheed Spiral which shoots gears from his head, and Batcheed Vulcan which fires screw-shaped bullets from his abdomen. After executing Industrial Revolution and combining with the Batchrium Plant, he is destroyed by the Samurai Giants and the Engines in the Samurai Formation 23.
Batcheed is voiced by Banjō Ginga.

Babatcheed

Chirakashizky

Other Barbaric Machine Clans

Cousin groups related to the Gaiark who are as evil as they are.

Arelunbra Family

Preceding the Gaiark as the Engines' mortal enemies, the Barbaric Machine Clan Arelunbra Family were sea-based androids terrorized Machine World with their Water Pollution Machine Knights before their leader Nigorl left for the Human World and the Arelunbra faded into legend.
The Barbaric Machine Clan Horonderthal is of a legendary clan of giant Clockwork Savage Machines which caused the extinction of the dinosaurs on the earth 65 million years ago with his violence-inducing Horonden Wave. He battled with the Ancient Engines at that time, with their fight ending up with both sides fossilized within a mountain. Making it his goal, Yogostein manages to find the location with the aid of Drill Banki, only to accidentally free the Ancient Engines instead. But after personally finding the exact location of Horonderthal, Yogostein awakens him from his rest and upgrades him so that his attack can affect Kyoretsu-Oh. However, in spite of his modern-time upgrades, the Horonderthal became the first to be scrapped by Engine-Oh G12 with Yogostein taking the Horonderthal's power for himself. His name is from the Japanese word for "extinct" and "Neanderthal".

Arsenal

;Barbaric Machine Soldiers Ugatz: Android footsoldiers built to support the Barbaric Machine Beasts and pilot the Barbaric Dohmas, later upgraded by Hiramechimedes with his screws. When Nigorl arrives, he brings his own feminine Beauty Ugatz, which are stronger than the regular Ugatz. Some of the Ugatz had their souls removed from them by Yogostein to revive the Savage Machine Beasts. In , the Ugatz can transform into motorcycles for the Nanashi to ride. They return in Kaizoku Sentai Gokaiger first fighting the Gokaiger along with the other foot soldiers in the Ghost Ship film and later under the service of Babatcheed. Its name is from the Japanese word for "dig".
;Barbaric Dohma: Cave cricket-like jet fighters invented by Hiramechimedes which can assume a frog-like walking mode. Though normally used by the Ugatz, the Pollution Ministers piloted their own Barbaric Dohmas before escaping to Earth. Its name is from the Japanese word for "cave cricket".
;Barbaric Dohma SP : Cave cricket and Mantis-like jet fighters that serve as Hiramechimedes' personal transport, each able to hold up to four Barbaric Dohma on itself to resemble a classic World War I airplane. The Pollution Ministers later used their own Barbaric Dohma SP to transport their Recycle Savage Machine Beast Army to carry out their plan to tear down the dimensional barrier.

Barbaric Machine Beasts

The Barbaric Machine Beasts are monsters created to pollute the Earth. They are each separated into one of three types that are under the Pollution Ministers: Savage Ground, Savage Sea, and Savage Sky. The Barbaric Machine Beasts are infused with a special energy called Bikkurium that enlarges them in a process called Industrial Revolution, however this process can be activated while the Barbaric Machine Beast is still alive. They are named putting the suffix "Banki" after the name of the object they are based on, machines that were present at the turn of the century. When scrapped, the dead Savage Machine Beasts shrink back to normal size and end up at the Savage Machine Beast Graveyard. Yogostein took advantage of this in his Savage Machine Beast program by using Ugatz souls to reanimate the Recycled Barbaric Machine Beast Army, only for them to be rescrapped by the Engines due to being much weaker than they used to be.

Other Braneworld inhabitants

Occasionally, the Go-ongers will meet people and creatures from the other 9 Braneworlds that existence entails.
;Lumbiaco: Lumbiaco is a monster from the Sound World, which was destroyed by Kireizky, who comes to the Human World with the intent to feed on its noises. By doing so, it grows in size and takes a nap before it feeds again, with the cycle repeating until it's too big for the world to hold. The only means to shrink it is with beautiful sound, which Lumbaico hates and goes on a rampage upon hearing. In the end, the monster is stopped by the specially assembled G3 Princess group who shrink him and destroy him with their attack. Its name is an anagram of ".
;Mage's Wand: The Mage's Wand comes from the Magic World, a Braneworld that is home to many sorcerers and magic is everyday until Kireizky wiped it out. The spellbook was deciphered by Manabu Yushima, an intelligent high school student who found these by chance. Yushima fell in love with Miu and attempt to win her by helping Kegaleshia magically infuse Bin Banki with magical powers. Though he eventually redeemed himself, Yushima accidentally destroyed his laptop and the translations in it.
;Santa Claus: Santa Claus is a being from the Christmas World, a Braneworld where the holiday season is endless with everyone dressed as Santa Claus and able to travel to other Braneworlds by train. Using the Different Dimension Present Bag he carries with him, Santa can take out presents from Christmas World and bring them into other Braneworlds. Portrayed by Kinzo Sakura.
Other Braneworlds mentioned in the series are the destroyed Prism World and serene Grass World as well as the western-style Gunman World which is currently being attacked by Batcheed and the remaining Gaiark forces as the series ends. The only other Braneworld that is extensively covered is the Samurai World.

Junk World

The Junk World is a Braneworld that resembles a junkyard due to Osen's invention that can multiply garbage and alters any organic being to possess the same attributes as scrap metal. Three years before the events of 10 Years Grand Prix, the Eleki Clan Zontark, a new clan consisting of two machine-men, was born from a pile of electronic waste and conquered the Junk World. Zontark comes from the Japanese word for "surmise".
;Osen: Osen is a tech-sorceress from the Junk World. She assumes a human form named Osen when she is deceived by Kitaneidas into thinking that her own Braneworld was in danger by an invasion from the Human World and decides to use her machine to give Gaiark the advantage. But after meeting Hant and seeing his kindness, Osen reverses her machine's polarity to turn the tables for the Go-ongers before returning to her own dimension. Her name is from the Japanese word for "pollution". Portrayed by Hana Kino.
;Noizun: Noizun is the leader of the Zontark who assumes a human form named Shinichiro Noizumi, the Minister of Defense. He uses a spear as his weapon. With other clan members, he can perform the Zontark Revolution attack. He gave the N Chips to people to turn them into the Noizumi Children, his servants resembling the Gaiark's Hiramechimedes, and also covered the Human World with the Country-Closing Barrier. He later turns Saki into the first Noizumi Child, but after Sōsuke rescues Saki from inside it, it is scrapped by the Go-on Wings in the final battle. In the final battle, he is scrapped by Engine-Oh G7. Voiced by Satoshi Jinbo, who also portrays his human form.
;Grayzky: Grayzky is the deputy leader of the Zontark resembling the Gaiark's Kireizky who assumes a human form named Taku Kurei, the leader of the special police force. He uses an assault rifle and a rocket launcher as his weapons. In the final battle, he is scrapped by Go-on Green and Black. Voiced by Yuu Kamio, who also portrays his human form.

Samurai World

Samurai World is a Braneworld that resembles Feudal Japan and was under the dictatorship of Empress Maki and her Yōma until the Go-ongers ended up in the Braneworld by accident and help in overthrowing Maki. It later would turn out that few Samurai World residents have an identical counterpart in the Human World they are linked to via the soul as shown with Retsu-Taka's Human World counterpart.
;Bakki: Bakki is a deforestation Yōma recruited by the spectral Urameshimedes. He comes to the Human World to kill the Go-ongers for Urameshimedes with Earth's forests as his price. But once defeated by Go-on Yellow, Urameshimedes possesses Bakki's body to personally finish the job only for Bakki to be destroyed by Engine-Oh G9.
;Rairaiken: Rairaiken is the crimson-colored lion-like Yōma servant of Maki. He is similar to Raiken from the movie, but he is not created from an Engine Cast and he lacks a vehicle form. He can wield a kusarigama/kusarifundo. After Maki's death, he later arrives in the Human World to take the Engine Sword and use Engine Dai-Shogun for evil. However, the Go-ongers ruin his and Gokugokumaru's plan, so the two ingest Bikkurium to execute their Fukoku Kyohei enlargement before being destroyed by Engine Dai-Shogun. Voiced by Naoya Uchida, who previously portrayed Tatsuya Midorikawa/Denzi Green in Denshi Sentai Denziman.
;Gokugokumaru: Gokugokumaru is a crimson-colored bear-like Yōma servant of Maki. He is similar to Gokumaru, but he was not created from an Engine Cast and he lacks a vehicle form. He fights with his claws and a large shuriken. After Maki's death, he later arrives in the Human World to take the small Engine Sword and use Engine Dai-Shogun for evil. However, the Go-ongers ruin his and Rairaiken's plan, so the two ingest Bikkurium before being destroyed by Engine Dai-Shogun. Voiced by Masaya Matsukaze, who previously portrayed Shun Namiki/MegaBlue in Denji Sentai Megaranger.
;Harunosuke: Harunosuke is a boy who comes from the Samurai World with his younger brother, Akinosuke, in order to protect the small Engine Sword with a part of Retsu-Taka's soul. Portrayed by Shohei Yamauchi.
;Akinosuke: Akinosuke is a boy who comes from the Samurai World with his older brother, Harunosuke, carrying the small Engine Sword on him. Portrayed by Hiroto Araki.