Bradley Cooper
Bradley Cooper is one of the actors on this list that could easily play either a Barry Allen version of Flash or Wally West. He can pull off a wisecracking, smooth-lipped, fun hero, and he could also pull off playing that all-around nice guy.
Cooper has a bit of action experience, and it’s actually his performance in Limitless that best displays what he could do with Flash. Flash doesn’t only run fast, but he can absorb information fast too. The speed learning is an essential part of the character, even if it’s one that Justice League may not initially make a big deal out of. We’ve seen Cooper handle that speed learning already, now he just has to get the running bit down.
Cooper is also the actor on this list that has been rumored for the role the most frequently. Even if the rumors mean absolutely nothing at all in terms of real casting, they do mean people are talking about him playing the character. While there are some who are adamantly opposed (there always are), the majority of opinions about Cooper in the role have been relatively positive. Cooper has denied the rumors (of course), but that at least means he knows about them as well. Perhaps that will pique his interest enough to toss his hat in the ring if the opportunity presents itself?