http://en.wikipedia.org/wiki/List_of_X-Men_members


Havok Alexander Summers

X-Men, vol. 1 #65 (1970)

Alex is Cyclops' and Vulcan's brother. Officially recruited into the team by Professor X in "The X-Men" Vol. 1 #95. Occasional boyfriend of Polaris and is the former leader of X-Factor and Starjammers. He currently leads the Uncanny Avengers.

Currently seen in Uncanny Avengers

Powers: Generates plasma blasts and absorbs cosmic energy