Sione Tu'ihalamaka was born and raised in Inglewood, California. His parents are Kisione and Kafoatu Tu'ihalamaka. Sione Tu'ihalamaka is 100% Tongan.
Tu'ihalamaka played football at Arizona University as a Defensive Lineman. In 2016, he made the switch to rugby to play for Arizona University. Sione Tu'ilhalamaka then moved on to play for the San Diego Tropics in the PRO Rugby League under coaches Ray Egan and Rob Hoads.