Colby Covington

Covington was about to be cut from the UFC after a boring decision win in 2017. His solution: become the most obnoxious heel in combat sports. He's called out entire nations (Brazil), insulted champions' dead fathers, and wore a MAGA hat to every press conference. The persona got him two title shots against Kamaru Usman — he lost both. His fighting is genuinely elite (five-round cardio, relentless wrestling), but his mouth writes checks his chin can't always cash.