Wilhelm is a no. Shuldig would find that he has even better shields than his own, plus he's my godmode. Schuldig would get raped.

Canaan is a yes. about a 3 - poke him, touch him, make him unhappy, but don't fuck him over. He does that enough to himself, and anyways, Serph would eat you for fucking with tribe.

Zhu Irzh is a no. I'm not clear enough on his mental capabilities yet to know how to work it - I know he can read minds and influence them, but I don't know how - if it's a special psychic thing, if it's a general demon trait, whatnot - or how strong he is.