Quote Originally Posted by TheCape View Post
This

http://marvel.wikia.com/wiki/X-Men:_..._Cyclops_Vol_1

Death of X is not the first time that Slim was food for worms, in 1999 he was possesed by Apocalypse and then killed with him during the "The Twelve" storyline, long story short the X-Men, Jean in particular were able to bring him back and separate his mind from him.
Well, might as well stick that on the ol' reading list.