A bad guy character is just as important of a crux in the world of mixed martial arts (MMA) as it is in the professional wrestling universe.
Fortunately enough, there have been a select few throughout the history of Ultimate Fighting Championship (UFC), who have taken on the role of heel and pushed boundaries. Some have trashed entire nations, while others have gotten a bit physical when they shouldn't have.
A whole lot more heels have been born of late, than of decade's past. In the above video, prominent current and past MMA titleholders, Daniel Cormier and Urijah Faber, list their Top 5 favorite heels of all-time, with my picks coming directly after theirs.