13. Nick Diaz
The elder Diaz brother always carried a certain mystique about him. A former Strikeforce champion and UFC contender, Diaz was always a fan-favorite. He was also an explosive personality and unafraid to bring some Stockton justice to personal disputes. Jason Miller discovered this the hard way after he confronted Diaz’s teammate, Jake Shields. A verbal dispute broke out before Diaz simply punched Miller.

Needless to say, this kicked off a brawl. It was one of the biggest in the history of MMA and had consequences because CBS canceled its coverage of the sport. Not that Diaz cared, because he was happy to issue some street violence to Miller. Meanwhile, his brother Nate has also had back-and-forths with Conor McGregor.