There's an indignant squeak at the hair-ruffling, but that's all the further it goes. He really doesn't mind it as much as he acts. Just wait until he gets to be comfortable, because then there's another tick in the cat box. But--

Wait, witches? "Are we talking like weird masked Druid 'I burn you with magic' witches? Because last time I had to deal with those, the guy burned my hand and it kinda turned this blotchy purple color..." Not that he'd have anything against Jeff if he is, but he'd at least know not to do anything to end up getting burned. Of course, that particular Druid was also the enemy and trying to kill him, but eh, details. It's also the only time he's ever had a reaction like that before -it's never been replicated no matter how many times he got banged up, so it was most likely a reaction to the magic.

Bash's comment makes him open his mouth, drawing breath to say something when he stops, thinks better on it, and closes it again. Really, what does he say to that? The guy's a literal demigod, so any comment Keith might make about not being normal is like calling water wet. "Okay, fine, you got me there."