Alexander Summers, alias Havok is a character from X-Men Movies.
He was a mutant who was placed in prison for killing the man who had abducted him and his sister. In 1962 his release was arranged by Charles Xavier and Erik Lensherr in order for him to join the team of mutant peacekeepers they were forming for the CIA. The warden cautioned them about putting him with others in a group, as Alex was the only prisoner he'd known to actually prefer solitary confinement.
While bonding with Xavier's other recruits, the secret CIA facility where they were staying was attacked by the Hellfire Club. Their leader, Sebastian Shaw, encouraged them to join him in overthrowing humanity. Angel Salvatore accepted the offer, and when Alex attempted to hit Shaw with his energy waves, Shaw absorbed the blast and used the energy to murder the mutant Darwin.
He is portrayed by Lucas Till