well, other than the fact that he's a huge piece of shit and probably a terrible actor... but on a purely physical level? I've never seen a person who looked more like the comic book Joker in my entire life
(I don't actually want this to happen I'm just saying)
Honestly I feel the same way about Mussolini as Lex Luthor.
Was gonna say that may have been intentional, but looking it up, golden age lex luthor had hair!