Fan Casting The Joker in Batfam TV Show

The Joker's background is unknown, but he has been one of Batman's greatest villains for many years. A few months before the show began, he killed Jason Todd (Robin). He is an abusive partner to Harley Quinn and has literally no moral boundaries at all, thinking that violence and murder is great fun. He is in Arkham, but manages to escape in time for the midseason finale, which is an adaption of The Killing Joke. Later in the season, Nightwing beats him to death, but Batman resuscitates him out of fear for Nightwing's mental state.