Barker's relationship with combat sports extends well beyond casual fandom. A longtime follower of the UFC, he has cultivated personal friendships with professional MMA athletes including Dominick Cruz and Marlon Vera — relationships that reflect genuine investment in the sport and its community rather than surface-level celebrity association.
In connection with UFC 324, Barker appeared in promotional content surrounding the event. The appearance drew public criticism, to which he responded directly — affirming that outside opinion had not diminished his authentic interest in MMA or his ongoing engagement with the combat sports world.
On the competitive grappling side, Barker has acknowledged that he has not yet entered any tournaments. He has expressed openness to exploring that path as his jiu-jitsu develops, leaving the door open for a future competitive debut as his training under Jean Jacques Machado continues to progress.