Batman: Three Jokers deals with the three heroes that the Joker has hurt the most: Batman, Batgirl, and Jason Todd. Johns and Fabok then revealed the three eras of the Joker they will use in the coming epic. First, there is the “first appearance” Joker from 1940, then the classic Silver Age "Clown Prince of Crime" Joker, and finally, the Brian Bolland-inspired Killing Joke Joker (the book's cover is something of an homage to that title).