Óscar Barberán

as Tad Jones (voice)

Michelle Jenner

as Sara Lavrof (voice)

José Mota

as Freddy (voice)

Pep Anton Muñoz

as Max Mordon (voice)

Miguel Ángel Jenner

as Kopponen (voice)

Luis Posada

as Momia (voice)

Meritxell Ané

as Young Tadeo (voice)

José Corbacho

as Freddy (voice)

Carles Canut

as Profesor Miguel Humbert (voice)

Félix Benito

as Profesor Lavrof (voice)

Aleix Estadella

as Voces adicionales (voice)

Rafa Parra

as Voces adicionales (voice)

Marta Martorell

as Abuela Tadeo (voice)