Forget Freddy Krueger, these guys are the stuff of quarterbacks' nightmares! These men and woman really know how to change momentum, break your bones and take your mental game down a notch.
No matter what the sport, just hearing the names of some of these guys will evoke memories of bone-crushing hits, trash-talking tirades and media frenzies.
I proudly give you...The 25 Most Intimidating Enforcers in Recent Sports History.
Also check out: Randy Moss and the 25 Biggest Egos in Sports