8. Exodus
Exodus is a great villain who was actually born in the 12th century. But, with time travel coming in the X-Men movie universe next year in
Days of Future Past, that's not something that would prevent him coming to the big screen. Exodus possesses powers such as telepathy, telekinesis, teleportation, superhuman strength and durability and a regenerative healing factor. He was the leader of a villainous group called the Acolytes, who would make great live action foes for Professor X and company. He has strong links to Magneto, who discovered Exodus in the 20th century and freed him, making him his right hand man, which could be the perfect way to introduce him to the movies - what with Ian McKellen's Magneto being the primary antagonist of the franchise thus far.