Havok (Alexander "Alex" Summers) is a fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. He first appears in Uncanny X-Men No. 54 (March 1969), and was created by writer Arnold Drake and penciller Don Heck. Havok generates powerful "plasma blasts", an ability he has had difficulty controlling. One of the sons of Corsair, he is the younger brother of the X-Mens Cyclops, and the older brother of Vulcan. He often resents Cyclops' authoritarian attitude and reputation as a model X-Man. In contrast, Havok and his longtime love interest Polaris have had a love-hate relationship with the team, often finding themselves roped into it. Both were also members of the 1990s-era Pentagon-sponsored mutant team X-Factor. After X-Factor disbanded, Havok starred in Mutant X, a series in which he explored a strange alternate reality. He has since returned to the X-Men, later taking over his fathers role as leader of the Starjammers to bring Vulcans reign over the Shi'ar to an end. In 2013, ComicsAlliance ranked Havok as #44 on their list of the "50 Sexiest Male Characters in Comics". Lucas Till played Havok, as a member of the X-Men, in 2011s superhero film X-Men: First Class. Till returned as Havok in the 2014 film, X-Men: Days of Future Past, and reprised the role again in 2016 film, X-Men: Apocalypse.