In the 14-year history of The Ultimate Fighter, there have been several memorable miscreants who went on to have enormously successful MMA careers.
Josh Koscheck, the alpha of the TUF bad guys, emerged as a fighter that fans loved to hate and he rode that wave up until his retirement earlier this year. Matt Mitrione came out of nowhere on TUF 10, becoming a memorable knucklehead that has since carved out a path for himself in both the UFC and Bellator. Even lightweight star Tony Ferguson started off as a troublemaker on TUF 13 before going on to win the show and 14 of his 15 UFC fights.