[FotoPlasma]

Cable, Bishop, Colossus, Gambit (if he's your favorite, why isn't he in the poll?), Rogue, Morph, Jubilee, Iceman, Psylocke, Storm, [Arch]angel, and the Professor himself...
And even then, there're others: Mr. Sinister, Mystique, Juggernaught, Magneto (!!!!!), Sabertooth... Apocalypse, the Brood, the Phalanyx... I'm sure there're more...