Of course, it would be a total game-changer if The Flash brought The Joker into things, especially since Gotham is going a slightly different direction with its iteration.
Adding further justification there is the fact that Hamill has been voicing The Joker in animated TV series, animated movies and video games for decades, so it would be a perfect connection.
Mark Hamill’s involvement in Season 3 was revealed through behind-the-scenes photos, and at the time, we weren’t alone in noticing the similarities between this Season 3 character and that slightly more famous antagonist, The Joker.
Hamill is rocking purple hair, face makeup and a pinstripe suit, all of which fit in with the Clown Prince of Crime’s look.