Fans may or may not be looking forward to it, but Warner Bros. is apparently moving ahead with its plans to build a separate cinematic universe based on DC Comics characters. They surprised everyone with their official announcement that the first film under this new banner would be a Joker origin story. We’re wondering how that will work, since the Clown Prince of Crime has no idea where he came from!

The project does sound interesting, given the numerous DC Comics stories that have explored The Joker’s past. And it appears that Martin Scorsese may be involved as a producer, and Leonardo DiCaprio’s been added into the rumor mix. All of this is certainly piquing everyone’s curiosity and building up some expectations.

So, which storylines should the studio consider for their Joker movie? Well, here are ten of them!