So, one thing I'm curious about - I'm open to suggestion on either front, but I'm assuming that the Batter is immune to Telepathy and other mental powers? Only on the basis that he's pretty expressly in-universe a kind of 'Embodiment of Nothing' who only sort of resembles a human being.

Since it never comes up in universe I'm fine with it if y'all want him to be vulnerable to psychic abilities like mind-reading and what have you, but personally I think he shouldn't be.