Jeremy Irons
— Governor Mordokan (voice)
Vanessa Redgrave
— The Matriarch (voice)
Michael York
— The Patriarch (voice)
Isabel Volava
— Rea (voice)
Jessica Boone
— Sandra (voice)
Josh Morrison
— Val (voice)
Bastian Antonio Fuentes
— Andy (voice)
Amelie Bellefeuille
— Mia (voice)
Bree Welch
— Annah (voice)
Gregory Gudgeon
— Fangbeak I (voice)
Peter Hosking
— Fangbeak II (voice)
Sebastian Hopwood
— Burgy (voice)
Patrick M. Bentley
— Young Gorgon (voice)
Charlie McGuire
— News anchor (voice)
Robert Polo
— Weatherman (voice)