 Following a behind-the-scenes video was released for the DC Extended Universe, it is revealed the suit did indeed belong to Jason Todd who was killed by the Joker before the events of the film, and is labeled as such at the Warner Bros.Studio Tour Hollywood.In "Suicide Squad", it is revealed Harley Quinn was an accomplice to Robin's murder, something that wasn't present in the "" (1988) storyline as Quinn was not yet created.