as Greg / Merman (voice)

as Greg / Citizen #3 (voice)

as Stuart / Nerdy Kid / Nice Kid (voice)

as Stuart / Greg / Neander Paul (voice)

as Stuart / Music Guy / Worker (voice)

as Stuart / Neander Paul (voice)

as Gebbrey (voice)

as Gebbrey / Barnus (voice)

as Barnus (voice)

as Gebbrey / Message Bird (voice)

as Gebbrey / Worker Man / Henchman 1 (voice)

as Backwards Gary (voice)

as Mona Lisa Sandwich (voice)

as Self

as Cerberuses Brother 3 / Pop / Monster

as Mountain Dad (voice)

as Bigfoot

as Grenda (voice) / Bully (voice)

as Grenda (voice)