It’s a universal truth that for every yin there’s a yang, and nowhere is this more apparent than in the worlds of fantasy and science fiction, where the most gripping entertainments contain long-standing epic battles between two colossal opposing forces. And when you think about it, where would your favorite heroes be without their foe? Probably sitting on the couch watching old sitcom re-runs and getting flabby (Fact: Thor is a HUGE Full House fan). Classic enemies give our heroes a purpose, direction and most importantly, someone’s face to smash. So here’s our countdown of the most epic rivalries in the history of fantasy and sci-fi. If you disagree, then you shall become our mortal enemy!!!