Saoirse Ronan as Talia (voice)

Freddie Highmore as Justin (voice)

Antonio Banderas as Sir Clorex (voice)

Mark Strong as Heraclio (voice)

Julie Walters as Gran (voice)

Olivia Williams as Queen (voice)

Alfred Molina as Reginald (voice)

Charles Dance as Legantir (voice)

Rupert Everett as Sota (voice)

Tamsin Egerton as Lara (voice)

James Cosmo as Blucher (voice)

Barry Humphries as Braulio (voice)

David Walliams as Melquiades (voice)