
There have been plenty of titles that have gotten people's panties in a twist, but one of the first was Duke Nukem 3D. A lead character who's a hard drinking, swearing, womanizing, macho man that spills alien blood like its coming from a hose is a parent's worst nightmare - and a gamer's delight. This 1996 classic has finally made its way to XBLA and its first person shooting awesomeness and twisted humor still hold up, making it a must download for series fans and newbies alike.
Chris, Alex, and Demarco sit down for some classic Duke Nukem 3D! Part 2 of 2!
Hilarity ensues as Chris, Alex, and Demarco sit down for some classic Duke Nukem 3D!

Because bad-asses deserve their own category!
a little off but for me it would be the main character in Saints Row, best part is he (or she) is as badass as you make him/her.