With lyrics like "feel my fist" and "soon you be dead" it can only mean the Dark Knight is jamming with his bandmates, Robin, Nightwing, and Red Hood. This crazy animated music video is a head-banging speed metal tour de force with Batman defiantly exclaiming his greatness. Even talking smack to Flash, Hulk, Rocket Raccoon, and Willy Wonka(?).
Animators Metalocalypse band Dethlok and turned their song "Face Fisted" into a bad ass Bat-flavored declaration of awesome.
(NSFW - language and some interesting visuals)