The definitive descriptions of shoggoths come from the above-quoted story. In it, Lovecraft describes them as massive amoeba-like creatures made out of iridescent black slime, with multiple eyes "floating" on the surface. They are "protoplasmic", lacking any default body shape and instead being able to form limbs and organs at will. A typical shoggoth measures 15 feet across when a sphere, though the story mentions the existence of others of much greater size. Being amorphous, shoggoths can take on any shape needed, making them very versatile within aquatic environments. Cthulhu Mythos media most commonly portray shoggoths as intelligent to some degree, but deal with problems using only their great size and strength. The shoggoth that appears in At the Mountains of Madness simply rolls over and crushes numerous giant penguins that are in its way as it pursues human characters. The character Abdul Alhazred is terrified by the mere idea of shoggoths' existence on Earth. The shoggoths bear a strong physical resemblance to Ubbo-Sathla, a god-like entity supposedly responsible for the origin of life on Earth.
Fictional history
At the Mountains of Madness includes a detailed account of the circumstances of the shoggoths' creation by the extraterrestrial Elder Things. Shoggoths were initially used to build the cities of their masters. Though able to "understand" the Elder Things' language, shoggoths had no real consciousness and were controlled through hypnotic suggestion. Over millions of years of existence, some shoggoths mutated, developed independent minds, and rebelled. The Elder Things succeeded in quelling the insurrection, but exterminating the shoggoths was not an option as the Elder Things were dependent on them for labor. Shoggoths also developed the ability to survive on land, while the Elder Things retreated to the oceans. Shoggoths that remained alive in the abandoned Elder Thing city in Antarctica would later imitate their masters' art and voices, endlessly repeating "Tekeli-li" or "Takkeli", a cry that their old masters used.
Other appearances
Aside from their main appearance in At the Mountains of Madness, shoggoths appear in numerous other Mythos stories, often as servitors or captives to powerful cults and entities.
Shoggoths are mentioned in the Lovecraft short stories "The Shadow over Innsmouth" and "The Thing on the Doorstep".
Shoggoths play a prominent role in Edward Lee's 2009 novella Haunter of the Threshold.
A shoggoth appears in the video game ', where it lurks in the sewers of Innsmouth.
A mini-boss in the video game Darkest Dungeon, itself borrowing heavily from Lovecraft in both tone and gameplay, is called a Shambler, and is a fairly direct replication of the shoggoths from In the Mountains of Madness, which are referred to by the author as "shambling".
Shoggoths appear in the penultimate and final novels of Edward M. Erdelac's weird western series Merkabah Rider.
A shoggoth appears in the graphic novel War Cry by Jim Butcher, part of his The Dresden Files continuity.
The gelatinous creatures which emigrate to the UK in Ben 'Yahtzee' Croshaw's novel "Differently Morphous" are initially referred to as "shoggoths" until the term becomes identified as a racial slur against fluidic beings.
Shoggoths appear in the video game Celeste.
Shoggoth-like creatures appear in the manga Berserk, by Kentaro Miura, as the snail/amoeba-like "whiskers", or fingertips of the giant jellyfish/octopus-like Sea God.
Shoggoths are one of the monsters that appear at 'Dimensional Gates' in the board gameArkham Horror.
Shoggoths are the monsters that appear in the board game Pandemic: Reign of Cthulhu
The Shoggoth also appears in the Minecraft mod "AbyssalCraft".
The Shoggoth also appears as a maid creature in Kenkou Cross's Monster Girl Encyclopedia. While more pleasing to look at, it retains a number of features of the original Lovecraftian version.
Shoggoth are mentioned in the conclusion of the story The Temple of Abomination by Robert E. Howard.
