Board Thread:General Discussion/@comment-4913740-20130628164607/@comment-24.178.227.11-20130718072002

Considering in MGS4 Screaming Mantis was able to control even dead soldiers (granted it was by nanomachines) I don't see why Mantis himself can't control corpses with his Psychic abilities and possibly be the leader of the "Don't Exist" group.