Bullet Club (2016–2022)

Koloamatangi was trained to wrestle by Bully Ray and Devon at the Team 3D Academy in Florida.^[4] In 2016, he travelled to Japan, where he became a student at the New Japan Pro-Wrestling (NJPW) dojo.^[2][6] Koloamatangi, under the ring name Hikule'o (a reference to the Tongan god^[10]), made his professional wrestling debut on November 12, 2016, in Auckland, New Zealand at NJPW's On the Mat Internet pay-per-view, losing to Henare.^[2][11]

Koloamatangi continued his training throughout 2017, serving as a young lion. He rejoined the active NJPW roster in September 2017, taking part in the Destruction tour under the ring name "Leo Tonga".^[12][13] He joined the gaijin heel stable Bullet Club alongside his brothers Tanga Loa and Tama Tonga and his cousin Bad Luck Fale, substituting for the injured Kenny Omega.^[14] On January 4, 2018, Koloamatangi appeared at Wrestle Kingdom 12, the 27th annual January 4 Tokyo Dome Show (NJPW's annual flagship event), taking part in a New Japan Rumble.^[15] At The New Beginning in Sapporo later that month, Koloamatangi changed his ring name to "Hikuleo".^[5][16] In March 2018, Hikuleo sustained an injury to his anterior cruciate ligament.^[17]

After recuperating and spending six months training at the NJPW Dojo in Los Angeles, Hikuleo returned at Honor Rising: Japan in February 2019, accompanying his brothers to ringside. Hikuleo competed in the 2019 New Japan Cup for the first time in his career, in which he was eliminated in the first round by Mikey Nicholls. Following that, Hikuleo debuted in The European promotion Revolution Pro Wrestling for his excursion to gain more experience and training, losing to Dan Magee in his first match on June 29.^[18] Hikuleo was absent from NJPW for a year from September 2019; he returned in September 2020 on the NJPW's United States show, NJPW Strong, defeating Brody King.^[19] In March of the following year, Hikuleo competed in the New Japan Cup USA tournament, defeating Jordan Clearwater to qualify for the tournament.^[20] In the first round, Hikuleo defeated Fred Rosser, but lost in the semi-final round to eventual tournament winner Tom Lawlor.^[21][22] In August, Hikuleo was defeated by Juice Robinson at NJPW Resurgence.^[23]

Guerillas of Destiny (2022–present)

Following The Guerillas of Destiny's ejection from Bullet Club at No Surrender Hikuleo began to become more aggressive to stable leader Jay White, who was responsible for kicking out Hikuleo's brothers. This led to Hikuleo answering White's "U.S of Jay" open challenge at Mutiny in April 2022, however White defeated Hikuleo, who gave White the "too sweet" gesture post-match, confirming his loyalty to Bullet Club.^[24] At Windy City Riot, Hikuleo teamed with his Bullet Club stablemates and Scott Norton, losing to United Empire.^[25] Hikuleo teamed with White, to defeat Kazuchika Okada and Rocky Romero of Chaos at Capital Collision in May.^[26] Hikuleo was scheduled to compete in an 8-man tag-team match at AEW x NJPW: Forbidden Door, teaming with Bullet Club stablemate El Phantasmo and one night only members The Young Bucks against Darby Allin, Sting and Los Ingobernables de Japon members, Hiromu Takahashi and Shingo Takagi, however it was announced that Takahashi wouldn't be able to compete at the event, due to suffering from a fever, so the match was made a six-man tag-team match, without Hikuleo.^[27] Despite this, Hikuleo appeared at the event in the corner of Bullet Club. Despite interfering in the match, Bullet Club was defeated by Sting, Allin, and Takagi at the event.^[28] In September, Hikuleo made his return to Japan at NJPW Burning Spirit teaming with Kenta and Taiji Ishimori to defeat Togi Makabe, Tomoaki Honma and Kushida.^[29] Later in the Burning Spirit tour on September 25, Hikuleo betrayed Bullet Club by attacking Jay White and siding with Tama Tonga, turning face and joining the Guerillas of Destiny stable with his brothers Tama Tonga and Tonga Loa along with Jado.^[30] On January 4, 2023, at Wrestle Kingdom 17, Hikuleo competed in the New Japan Rambo match, but failed to last till the final 4.^[31]

After the event, Jay White challenged Hikuleo to a "Loser Leaves Japan Match", which took place in February at The New Beginning in Osaka, where Hikuleo defeated White, expelling him from Japan.^[32] In May 2023, at Wrestling Dontaku, Hikuleo defeated Kenta to win the Strong Openweight Championship, his first championship in NJPW.^[33] He would lose the title back to Kenta 18 days later, at Resurgence.^[34] In July, Hikuleo entered his first G1 Climax tournament, where he would compete in the A Block.^[35] Hikuleo finished his tournament campaign with 8 points, with a win over Shota Umino in the final match of the block, causing him to be the runner up in his block and thus advancing to the quarter-finals.^[36] In the quarterfinal round, Hikuleo lost to eventual tournament winner Tetsuya Naito, eliminating him from the tournament.^[37]