Freddie Highmore

as Arthur Montgomery

Selena Gomez

as Princess Selenia (voice)

Doug Rand

as Prince Betameche (voice)

Mia Farrow

as Daisy Suchot

Robert Stanton

as Armand Montgomery

Penny Balfour

as Rose Montgomery

Snoop Dogg

as Max (voice)

will.i.am

as Snow (voice)

Fergie

as Replay (voice)

David Gasman

as Emperor Sifrat XVI (voice)

Lou Reed

as Maltazard (voice)

Iggy Pop

as Prince Darkos (voice)