Evan is the level-headed, sarcastic best friend of Seth in Superbad. He's played by the lovable Michael Cera, of Arrested Development fame. Evan is also the brains behind any operation cooked up in this film.
Seth: [referring to Evan's mother] I am truly jealous you got to suck on those tits when you were a baby. Evan: Yeah, well, at least you got to suck on your dad's dick. Seth: [shrugs] It's a nice lookin' dick.