This is a repost, but the movie's out now, so I figure, why not?
Have you heard of Rise fo the Guardians? It's a movie where mythic beings team-up to save the Earth. Basically, it makes Santa, the Tooth Fairy, the Easter Bunny and Sandman superheroes.
I thought one more addition to the Avengers of myths would be apt--Jesus. He's perfect! A lot of people believe in him at some point in their life. He is associated with not one holiday, but two! If anything, Santa and the rabbit should be scared if JC makes the roster. He kinda makes them redundant. I added him to the poster for effect. Dreamworks will probably either sue me or hire me on for the sequel.