As someone said, Glen Powell looks more like Aquaman and I could see that now. I could picture him in the Aquaman suit. I think he easily could have played The Deep in The Boys. As Bruce Wayne though...meh. I've never been a fan of the majority of Batman castings. I mean I did like Ben Affleck to an extent. I was skeptical when Affleck was cast, just because he was too recognizable as an actor, and it just seemed so random, but he did pull it off, and I wasn't conscious of him being Ben Affleck when he played the role. Affleck had the look of Bruce Wayne and the chin, as well as the smirk, and he did embody the darkness pretty well. He was too buff in my opinion-but not sure what it was about his Batman, maybe the voice, he was maybe a tad too aggressive. Not a hate comment. His Batman was decent. Overall though, I didn't see Affleck entirely as Batman.
I was initially annoyed by Robert Pattinson's casting as Bruce Wayne, mostly because he was also a well-known actor, but I thought he pulled both roles off, and I really dug his performance, but to my mind, Pattinson's Batman is still a developing Batman and Bruce Wayne and I think we have yet to see more from his performance. Pattinson really did got the darkness down. Loved the look in his eyes portrayed when he wore the cowl throughout the film. He looked like he had clear motivation. He was angry and out for vengence.
Looking back at Val Kilmer's performance, Kilmer had a nice soothing voice that almost sounded like Kevin Conroy when he was speaking as Batman. I thought his performance as Bruce Wayne however was very dull and lacked emotion. I never thought Kilmer was a good actor.
On George Clooney though--you compare any of the above actors mentioned, most of them were replaceable to me. Yes, the script for Batman & Robin was terrible, but Clooney almost seemed like the perfect Bruce Wayne. He had the charm. But not as Batman. Had Clooney been given a better script, I wonder if Clooney could have done better. But in other roles I have seen Clooney in like "Up In The Air", he has the crankiness of Bruce Wayne and Batman. But for both the Schumaucher Batman films, I think both Clooney and Kilmer didn't really understand the role well enough. When they put on the batsuit, it looked like they were saying "Okay, I'm a superhero" but the psychology behind the character was lacking. The motivation behind--why this guy would put on a batsuit--wasn't there in my opinion. At the most, both Clooney and Kilmer just seemed like random guys wearing a bat costume without any depth or motivation behind it.
While I enjoyed the Nolan Batman movies, Christian Bale wasn't my favorite Batman. Bale's Bruce Wayne persona seemed slightly over-the-top with his public appearances. Some of the psychology was there when he was playing Batman, but the voice was over-the-top for me. Again, there was just one element of the character missing for me, and that was the crankiness. The dry personality.
I'm come down to Keaton. Michael Keaton is my favorite Batman of all time. Or at least in live action. Yes, he didn't have the height or the physique, but to me his performance sold. I really believed this guy would put on a batsuit and fight crime. I dug his performance. I really believed this was guy mad at the world, and determined to fight crime until the city was safe again. Burton's films didn't give Batman much backstory, and portrayed Batman as more of a mystery, but one thing seemed clear was that this man was obsessed-driven, and at times, almost seemed like a sociopath. No, I'm not saying Batman is a sociopath. Keaton had the darkness, but he also had a lightness to him. He seemed like a guy who had real problems, and he put his war on crime above his love interests. His Batman was tough, intimidating-and I liked the way he turned his body as he couldn't move his head. He had the look in his eyes, which I felt kind of matched the look of Wayne in the comics. Just lines like "Well it's not exactly a normal world is it?" or ignoring Vicki Vale in the Batmobile completely made him so interesting and defined the character. He had the crankiness and the dry sense of humor which felt closely similar to Conroy's performance. Lastly, no one said "I'm Batman" better than Keaton.
If Kevin Conroy's Batman was done in live action, then he would be the best Batman of all time, but he certainly was the greatest voice to portray the character of all time. Conroy got the character right, and to me was on par with Christopher Reeve was as Superman. To me, Conroy's performance almost matches Keaton's Batman. Killing his enemies aside that is-which is the one thing Burton got wrong about the character, whereas Nolan got the 'no killing' rule right, albeit, the crankiness was missing from Bale's portrayal in my opinion.
In retrospect, I think Pattinson has the glare look on his face and does it quite well when he performs. Keaton had the eyes for me (which I think the cowl design in The Flash almost ruined it for me--that cowl design really narrowed his look down and made him look far less intimidating) but his eyes looked like he experienced trauma as a child and looked angry.
As for Glen Powell. Seems like another random pick if he is the guy that's going to play Batman. Doesn't have the eyes for me. I don't know, as I haven't seen him perform. He just wouldn't be my pick.