Actor/Actress with the Most Impeccable "Nerd" Credentials

Scorpius the Allfather said
He has been, but Karl already was and still is going.

Actually, I don't think that's true. What shows for Urban is multiple roles in the same franchises (The Boys, Star Trek, LOTR). Esposito has a lot in everything, TV and movies, going back to frickin Sesame Street.