Takanori Gomi
Brennan went 0–2 in Shooto, losing a controversial decision to Takanori Gomi before he made his PRIDE debut on October 5, 2003 at Bushido 1 against Eiji Mitsuoka and won via kimura submission in the first round. In his next appearance for the organization, he faced Daiju Takase a year later at Bushido 2 and lost via unanimous decision.