Among the many joys Batman V. Superman: Dawn of Justice gave us — Batfleck, Gal Gadot's Wonder Woman, Wonder Woman's theme, a brief glimpse of Ezra Miller's Flash, "Martha!!!" and so on — chief among them is the prevailing fan theory that Jared Leto's Joker in Suicide Squad is actually Batman's ill-fated former sidekick, Jason Todd, a.k.a. the second Robin.
In Dawn of Justice, Todd's mutilated Robin suit is seen in a glass showcase in Wayne Manor. Presumably, it's a grim reminder of what The Joker has taken from Bruce. However, some fans believe that Todd didn't die at the hands of the Clown Prince of Gotham; he became him. (Bullet holes in Todd's maimed suit seem to correlate to scars on The Joker's shoulders in this shirtless photo of Leto's psychotic villain.)
Unfortunately for those eagle-eyed fans, Suicide Squad writer and director David Ayer has debunked the popular theory. Recently, Ayer was asked by Miami's WSVN-TV to name the most ridiculous rumor he's heard about the film. "That the Joker is Jason Todd," he said. "It ain't the case. He’s not."
In all fairness to the fans, the idea of Robin becoming The Joker isn't that far-fetched. In Batman Beyond: Return of the Joker, the Clown Prince brainwashed former Robin Tim Drake into taking over from him after he died. See? Not so ridiculous now — is it, Ayer?
Maybe instead of Todd, THE JOKER IS ACTUALLY TIM DRAKE. (Nah. Probably not.)