I like the idea that Batman's dislike of magic has led him to read up on any fictional magic-using superteams, just in case they get sent into his universe. There's a thing to be on the big screens in the Batcave.
"Bruce, what the hell are you doing?" "Research." "Because it looks like you're watching some magi-" "Research." "Fine, fine, I get the hint. See you later." ".....At least he didn't find the fanfic."