1. Batman: Jensen Ackles
Batman in the Arrowverse is a tortured, absentee hero, and while he should be played by an older actor, Jensen Ackles is just too perfect. He is a CW veteran, he auditioned for Batman in the DCEU, and he just looks and acts so much like both Bruce Wayne and Batman. It would interesting to see his chemistry with his close friend Stephen Amell in a crossover event, and I think that this is a casting decision that fans have been waiting years to see.
Who should be in the Batwoman series? Let me know in the comments!

I want all the Batman villains to be part of the Batwoman series, even for Bruce Wayne to come back, also Commissioner Gordon, Barbara Gordon, Lucious Fox