"What did you expect? A Monster?
—Machine, Eight MM
Harley Quinn (re: the captured Batman): Ain't you gonna take his mask off and find out who he is?
The Joker: And reduce my primal enemy to a mere man? Harley, dear, I'm so disappointed in you! Where's the fun in that?
Lex Luthor (having swapped bodies with The Flash): At least I can discover the Flash's secret identity... *Removes mask* ...I have no idea who this is.