"Arnold, a mouse in midlife, sees his world as artificial theater sets. As personal troubles mount, his suspicion of living in a fake reality leads him to search for what's authentic."
Asier Hormaza
as Arnold (voice)
Aintzane Gamiz
as María (voice)
Kandido Uranga
as Búho Gigante / Ermitaño (voice)
Mikel Garmendia
as Capataz/Gato Carcelero 1/Setita 1/Voz Off (voice)
José Felipe Auzmendi
as Carlos/Demonio/Médico/Policía 4 (voice)
Ander Vildosola
as Fantasma Ramiro/Paloma Mensajera/Ramiro (voice)
Nagore Irizar
as Gatita/Hurona/Jenny/Sara/Setita 2 (voice)
Arkaitz Gartziandia
as Gato Carcelero 2/Policía 2/Señor Hurón (voice)
Marga Altolaguirre
as Gertrudis/Madre de María/Paloma/Pippo/Señora Cerdo/Señora Gato/Señora Osezno/Sirena (voice)
Iñaki Beraetxe
as Gregorio (voice)
Aintzane Crujeiras
as Hada Depresión/Setita 3 (voice)
Ramón Zalakain
as Jefe Seta (voice)
Ana Lemos
as Micaela (voice) (as Ana Lemos Correa)
Joseba Sacristán
as Narrador/Policía 3/Preso Cerdo/Señor Cerdo/Señor Osezno (voice) (as Joseba Sakistrán)
Alberto Vázquez
as Pato Roni (voice)
Xabier Yabar
as Policía 1 (voice)
Raul Dans
as Pollo Crazy (voice) (as Raúl Dans Mayor)
Iker Bengoetxea
as Señor Seta (voice)
Damián Cortés
as (voice)
Chelo Diaz
Óscar Fernández
Luis Iglesia
Daniel Lema
Gaspar Somoza
Director
Writer
Iván Miñambres
Editor
Executive Producer
Chelo Loureiro
Producer
Joseba Beristain
Original Music Composer
F. Xavier Manuel
José Luis Ágreda
Art Direction
Nuno Beato
José María Fernández de Vega
Estanis Bañuelos
Iñaki Alonso
Sound Re-Recording Mixer
Sound Designer
Maider Blázquez
Foley
Pakoto Martínez
Background Designer
Iosu González
Sound Editor
Oihan Lizaso
Dialogue Editor
Joseba Hernández
Compositing Supervisor
Fernando Abaca
Animation
Julián Lominchar
Animation Supervisor