It was only a matter of time before Mario flipped his lid and started to go gangsta on King Koopa's shell! 

This video proves that little Mario could really do some damage -- and let out a disturbing amount of hostility -- on the various 8-bit baddies he's forced to do battle with to save that damn princess.

So let your inner 8-year-old out and enjoy Super Mario Serial Killer. Let the 8-bit blood flow!