Carl Faruolo

as Stuart / Neander Paul (voice), Stuart / Greg / Neander Paul (voice), Greg / Citizen #3 (voice), Stuart / Nerdy Kid / Nice Kid (voice), Stuart / Music Guy / Worker (voice), Greg / Merman (voice)

as PMA Guy (voice), Jumping Guy / Dr. #3 / Crutches (voice)

as Grenda (voice), Grenda (voice) / Bully (voice)