Napa was born in Brisbane, Queensland, Australia. He grew up in a family with a Cook Islands born father and an Australian mother. He attended St Patrick’s College, Shorncliffe and then went on to play junior football for the Brighton Roosters, North St Joeys, Aspley Devils, the Brisbane Brothers before being signed by the Sydney Roosters. Napa played for the Roosters NYC team in 2011 and 2012. Napa was named as a prop in the inaugural under 20s State of Origin match for Queensland in 2012. At the end of 2012, Napa was named on the interchange bench in the under 20s team of the year. Napa cites Karmichael Hunt and Sonny Bill Williams as two inspirations for his playing style while growing up. in 2012
Playing career
2013
In Round 15 of the 2013 NRL season, Napa made his NRL debut for the Sydney Roosters against the Canterbury-Bankstown Bulldogs, playing off the interchange bench in the Roosters 20-18 win at ANZ Stadium. In his third match in Round 24 against the Cronulla-Sutherland Sharks, Napa put on one of the biggest hits of the year on Sharks captain Paul Gallen in the Roosters 32-22 loss at Shark Park. Napa played in 7 matches for the Roosters in his debut year in the NRL in the 2013 NRL season, missing out on a grand final spot due to Luke O'Donnell recovering from injury. At the end of the season, Napa played in all three matches for the Cook Islands at the 2013 World Cup. On 30 October 2013, Napa made his Cook Islands international debut against the United States in the 32-20 loss at Memorial Stadium.
In January, Napa was a member of the newly established QAS emerging Maroons squad. In January 2015, Napa was selected in the Roosters 2015 Auckland Nines squad. In Round 2 against cross-city rivals the South Sydney Rabbitohs, Napa scored his first NRL career try in the Roosters 34-26 loss at ANZ Stadium. On 22 March 2015, Napa re-signed with the Roosters until the end of the 2017 season. Napa was included in the Queensland squad for the 2015 State of Origin series, being named as 18th man in Game 1 and Game 3. Napa finished the 2015 NRL season playing in all 27 matches and scoring 1 try for the Roosters.
2016
On 12 January 2016, Napa was again selected in the QAS emerging Maroons squad. On 5 February 2016, Napa was one of eight players from the Maroons emerging camp who was banned from representing Queensland for 12-months after breaking curfew in Brisbane. In Round 6 against the South Sydney Rabbitohs in the Roosters 17-10 win at ANZ Stadium, Napa earned the man of the match honours after he had scored a try, completed 40 tackles and made 151 metres from 19 runs. Napa finished off the 2016 NRL season with him playing in 23 matches and scoring one try for the Roosters. On 24 September 2014, Napa played for Prime Minister’s XIII against Papua New Guinea, playing off the interchange bench in the 58-0 win at Kokopo. On the early hours on 11 December 2016, Napa was assaulted at a charity party by “Cleaners” at a Sydney Northern beaches mansion. Napa who was asleep at the time was awoken by a woman screaming as the “Cleaners” were told to leave to the property because they refused to do their job and they started to be verbally abusive and were destroying property and when Napa come in the aid of the woman, he was struck by a fire poker and was knocked out unconscious and taken to hospital.
2017
On 17 January 2017, Napa extended his contract with the Roosters to the end of the 2019 season. After showing good form in the early rounds, Napa was selected for the Queensland Maroons squad for the 2017 State of Origin series. On 31 May 2017, Napa made his Queensland representative debut against New South Wales, starting at prop in the Maroons woeful 28-4 loss at Suncorp Stadium. Napa would start at prop in the next 2 matches as the Maroons won the series 2-1. Napa finished the 2017 NRL season with him playing in 21 matches for the Roosters.
2018
In Round 11 against the Brisbane Broncos, Napa was sin-binned in the last 5 minutes of the match after he led with his head on a heavy hit on Broncos forward Korbin Sims, breaking his jaw in the process, the sin-binning would prove costly for the Roosters with 12 men on the field and Broncos boom rookie Jamayne Isaako would score a dazzling try in the 78th minute and the Roosters would lose the thrilling match 28-22 at Suncorp Stadium. Napa would start at prop in Game 1 and 2 for Queensland in the 2018 State of Origin series but later got demoted to 18th man in Game 3 as the Maroons lost the series 2-1. In Round 24 against the Brisbane Broncos, Napa again got himself into trouble and was sin-binned, coincidentally the same way like the previous match against the Broncos, leading in with his head but this time knocking out Broncos hooker Andrew McCullough unconscious during the Roosters 22-8 loss at Sydney Football Stadium. On 27 August 2018, Napa was handed a 3 match suspension by the NRL after being charged with dangerous contact. The suspension meant that Napa missed the clubs week one finals victory over Cronulla and the preliminary final win against Souths. On 30 September 2019, Napa played in Sydney Roosters 2018 NRL Grand Final against the Melbourne Storm, playing off the interchange bench in the 21-6 victory, On 25 November 2018, Napa signed a 3-year contract reportedly worth $2 million to join the Canterbury-Bankstown Bulldogs starting in the 2019 season as the ideal replacement for David Klemmer who left the club to join the Newcastle Knights.
2019
On 10 January 2019, lewd videos of Napa were leaked to the media. The first video leaked showed Napa being filmed having sexual intercourse with an unknown female with Napa saying in the video "Call me Big Papi, Call me Big Papa". On 12 January 2019, a second video was leaked with Napa performing a sex act while former teammate Kane Evans was filmed shadow boxing. On 13 January 2019, Napa reportedly approached police and engaged lawyers, with the sharing and publication of clips of that nature potentially in breach of so-called ‘revenge porn’ laws. On 27 January 2019, it was revealed that the leaked video originated from a Whatsapp Group message between Sydney Roosters players over 5 years ago stretching back to 2013. In February 2019, it was reported that Napa was facing a playing suspension in relation to the leaked videos. On 1 March 2019, it was announced that Napa had escaped suspension by the NRL but was docked 10 percent of his wage for the 2019 season. NRL CEO Todd Greenberg said of Napa's behavior that it was an "act of gross stupidity". Greenberg went on to say "The videos I have seen are gross, juvenile and disrespectful. If there was a grading in our system for stupidity, this behaviour would be at the very top end". In Round 1 of the 2019 NRL season, Napa made his club debut for the Canterbury-Bankstown Bulldogs against the New Zealand Warriors, starting at prop in the 40-6 loss at Mt Smart Stadium. In Round 2 against arch-rivals the Parramatta Eels, Napa scored his first try for in the 36-16 loss at ANZ Stadium. In Round 4 against the Melbourne Storm, Napa was taken from the field during the Bulldogs unlucky 18-16 loss at AAMI Park. Scans later revealed Napa suffered a grade two syndesmosis to his right ankle and was ruled out for 6 weeks.
