Cain Marko aka The Juggernaut is not a mutant. Cain Marko, half-brother of Professor X Charles Xavier, got his magical juggernauting powers one day while spelunking caves in upstate New York New York where he finds the magical Ruby of Cyttorak. The Ruby gives Cain Marko magical powers in which he becomes the magical Juggernaut, a superguy who can run through any kind of wall no matter what its made out of.
Beast aka Hank McCoy has mutated into a giant monkey
Banshee aka Sean Cassaday is still dead, killed by two airplanes hitting him
the X-Men
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