[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.

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.

[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.

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.

[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.

[38] From November 25 until December 6, Hikuleo and Phantasmo took part in the 2023 World Tag League, where they won their block with a record of five wins and two losses, advancing to the semifinals of the tournament.

[40] On February 11 at The New Beginning in Osaka, Hikuleo and Phantasmo lost the IWGP Tag Team Championship to Bullet Club (Chase Owens and Kenta), ending their reign at 38 days.

[41] On April 12 at Windy City Riot, Hikuleo and Phantasmo lost the Strong Openweight Tag Team Championship to TMDK (Mikey Nicholls and Shane Haste) in a four corners match, before regaining them on May 11 at Resurgence.

[44] Hikuleo appeared in the crowd on Night 2 of Fyter Fest in July 2021, watching the IWGP United States Championship match between Jon Moxley and Lance Archer, thus making his All Elite Wrestling (AEW) debut.

Hikuleo returned to AEW on the June 1, 2022 episode of Dynamite teaming with Undisputed Elite members The Young Bucks and reDRagon to defeat the Jurassic Express, Christian Cage, Matt Hardy and Darby Allin in a ten-man tag-team match.

[51] At Turning Point in November, Bey and Hikuleo were once again unsuccessful in capturing the Impact World Tag Team Championships from The Good Brothers.

[52] Hikuleo returned to Impact Wrestling in November at Emergence, teaming with Bullet Club stablemates to lose to Honor No More in a 12-man tag-team match.