This is Charles Xavier, one of the ships Interpersonal Relationships Officers. I'm clearly not available at the moment. I'll answer as soon as I'm able.
Can Charles read your characters mind? Can he alter their memories? (example: erase certain memories or retrieve memories your character has lost) Can he alter your characters perception (make him/a group appear invisible or different, like wearing a dress or something)? Can he control your characters actions at any point? (used for specific occasions/events)
EDIT: ALL OF THIS, OF COURSE, WILL BE BROUGHT UP OOC'LY BEFORE I DO THE THING.