From alien gods burdened with glorious purpose to metal-bending mutants, Marvel has racked up quite the rogue's gallery.



Even before Iron Man and the rest of the Avengers started assembling, movies based on Marvel characters have been entertaining us with the best kick-punching Hollywood money can buy -- pitting the X-Men and Spider-Man against a variety of fan-favorites.



In honor of Loki's, er, Tom Hiddleston's birthday, here is a ranking of the 15 greatest baddies to ever appear in a movie based on a Marvel property.