Captain Marvel I could see a beefed up Jerry O'Connell playing him. O'Connell tested for Superman but wasn't given it of course. I think he has the lighthearted nature to pull off the role of a naive superhero befitting of Mr. Batson (see: My Secret Identity). For Black Adam I'd say maybe Jason Isaacs with a tan or somebody else who is good at embodying a total scumbag. Green Lantern (Hal Jordan) Casting for this one would be tough for me. But for Hal Jordan (I know many will disagree with me) but I could probably see Clive Owen sporting the ring.