Vincent Martella as Greg Wuliger, (born:1970) Chris's best friend. Greg is kind of weird. He is the only white kid at school who doesn't hate Chris. He is about as unpopular as Chris is. Chris always comes to Greg for advice, even though Greg is usually terrible at coming up with solutions. On top of being a good student, Greg also has a series of odd quirks (such as going to bed dressed as different superheros), but considers himself cool. He has a book about almost everything in his locker. He is an only child. His mom married his dad because she lost a bet. Greg went to a different high school in Season 4, but got kicked out due to poor grades when he tried to portray more "tough" image.

"Dude, you are so in there!" -Greg's usual response whenever Chris interacts with a girl.