13. Dick Butkus – Chicago Bears:
Are you sensing a bit of a trend between legendary defensive players and dirty players? Indeed, the two seem to go hand in hand in some regards.
In this case, Butkus was one of the best linebackers in NFL history and the face of the vaunted Chicago Bears’ “Monsters of the Midway” for many years. During his playing years, Butkus was regarded as a man who played with no regard for his opponents’ safety. It earned him a legendary career and a Hall of Fame induction, but also a spot among the dirtiest players of all-time.