In 2019, he signed with Major League Wrestling, joining his relatives Samu and Samu's son, Lance Anoa'i in the company.[4] Fatu debuted for MLW at their February event SuperFight, alongside his frequent tag team partner Josef Samael in a non-televised match. The duo of Fatu and Josef would then make their televised debut in MLW at Intimidation Games on March 2 by attacking the World Heavyweight Champion Tom Lawlor following his cage match against Low Ki, thus forming the heel stable Contra Unit with Simon Gotch.[5] The following week, Contra Unit attacked Ace Romero during his match with Gotch.[6] After months of feuding with Lawlor, Fatu defeated Lawlor at Kings of Colosseum on July 6 to capture the World Heavyweight Championship.[7] He would also retain the title against Lawlor in a rematch.[8] He then headlined MLW's first-ever pay-per-view event Saturday Night SuperFight, where Fatu successfully defended the title against LA Park.