Kevin Bacon, Michael Fassbender, Lucas Till, Zoe Kravitz also attend
Lucas Till at the 'X-Men: First Class' premiere
In the film, Lucas Till plays Havok, a powerful and volatile mutant who can create high-energy plasma blasts.
Till was one of the soldiers in "Battle: L.A."
See more of Havok, plus fellow X-Men Banshee and Beast, in these trailers.