5) The Riddler
Another character who featured in Batman: Assault on Arkham, the Riddler had a significant role in that film as it was his stolen information that got the squad sent into action in the first place. For a Suicide Squad sequel, though, we think it would be interesting to see Mr. E. Nygma join the team for real.
Despite his name recognition, the Riddler probably isn’t a big enough threat to be the central villain of a Batman solo movie nowadays. It would be much more sense, then, to feature him on Task Force X. Let’s face it, he’s also pretty hard to take seriously a lot of the time – don’t give Batman clues, you idiot! – so it could be fun to see him as the butt of the joke. Plus, we can definitely imagine Will Smith’s Deadshot getting quickly irritated by a guy who incessantly recites riddles.
4) Catwoman
Like the Riddler, Catwoman is another of Batman’s rogues gallery who is not usually connected to the Suicide Squad. But after so many of Gotham’s criminals turned up in the first movie, Selina Kyle would be a natural fit for the team on the big screen.
For starters, Catwoman is often presented as an anti-hero, so she would be a good pick for the Task Force X program. She and Harley could also have an interesting relationship. Both have feelings for men who it can never work out with (Joker and Batman, respectively), after all. And, in a way that would actually pass the Bechdel test, they could also bond over their wild natures.
We’ve had many cinematic versions of Catwoman, but seeing her forced to do good with the Suicide Squad could make the character fresh again.