Friendly reminder: he's not Michael Cera
He actually looks a lot like this Lex
You were never going to get Bryan Cranston
Lex Luthor is a geek, remember?
Super-smart antagonist is basically Jesse's thing
He can definitely pull off the look
Villains aren't supposed to be likeable
All in all, there's no way we can determine at this point whether or not the movie will be good. Everyone needs to take a step back, remember how many actors have surprised and continue to surprise us with incredible performances, and stop being so damn determined to dislike new things.
Okay, I don't actually expect that to happen, but let's at least try to give this movie a chance to surprise us, rather than expecting it to be the next Elektra.