Batman / Superman: World's Finest #9

Batman and Superman are on a quest to train the mysterious new hero Boy Thunder... but what's that in the dark? A faint noise...sounds like a laugh? Uh-oh. The Joker is here and he's got his own plans for a super-powered sidekick! Someone hide all the crowbars, quick! (W) Mark Waid (A) Dan Mora (Ca) Paolo Rivera