Hikuleo is the son of legendary professional wrestler King Haku, and the younger brother of Tama Tonga and Tanga Loa. At 203cm, 120kg and only 27 years of age, Leo easily made his presence felt in the ring from day one and quickly became known as the Young Gun of BULLET CLUB. A 2018 excursion to the UK would then see him transition to the US and NJPW STRONG. 

Aiming to be the most feared big man on Friday nights, Hikuleo would become embroiled in a rivalry with Fred Rosser, and when both qualified for New Japan Cup USA in 2021, Hikuleo demanded he face Rosser in the very first round.