 | Karra Elejalde als Héctor |
 | Candela Fernández als Clara |
 | Bárbara Goenaga als La chica del bosque |
 | Nacho Vigalondo als El Joven |
 | Juan Inciarte als Héctor Ocasional (as Ion Inciarte) |
 | Libby Brien als Clara (voice) (uncredited) |
 | Nicole Dionne als La Chica (voice) (uncredited) |
 | Philip Hersh als Radio Announcer (voice) (uncredited) |
| Nacho Vigalondo | Director |
| Nacho Vigalondo | Writer |
| Biaffra | Art Direction |
| José Luis Arrizabalaga | Art Direction |
| Urko Aguirre | Set Decoration |
| Jaime Gartzia | Set Decoration |
| José Luis Romeu | Editor |
| Eduardo Carneros | Producer |
| Javier Ibarretxe | Executive Producer |
| Javier Ibarretxe | Producer |
| Soraya Lacaba | Associate Producer |
| Cormac Regan | Associate Producer |
| Nahikari Ipiña | Associate Producer |
| Jordi Rediu | Co-Producer |
| Chucky Namanera | Original Music Composer |
| Flavio Martínez Labiano | Director of Photography |
| Eduardo Carneros | Executive Producer |
| Esteban Ibarretxe | Producer |
| Dave Chariton | Associate Producer |
| Todd Brown | Associate Producer |
| Norbert Llaràs | Co-Producer |
| Esteban Ibarretxe | Executive Producer |
| Sergio Barrejón | Associate Producer |
| Santi Camuñas | Co-Producer |
| Eugenio Mira | Original Music Composer |
| Manuel Carrión | Foley |
| Roberto Fernández | Sound Designer |
| Marcos Onaindia | Visual Effects Supervisor |
| Aitor Basterretxea | Script Supervisor |
| Miguel Ángel Cárdenas | Gaffer |
| Martín J. Guridi | Sound Re-Recording Mixer |
| Jon D. Domínguez | Camera Operator |
| Ángel García Palmeiro | Property Master |
| Juan Cadenas | Boom Operator |
| Ricardo Viñas | Dolby Consultant |
| Cormac Regan | Still Photographer |
| Amaia Maguregui | Assistant Makeup Artist |
| Alberto García | Electrician |
| Félix Guede | Electrician |
| Ernesto Núñez | Key Grip |
| Raúl Romanillos | Special Effects |
| Jon Elizegui | First Assistant Camera |
| Jon Barco | Second Assistant Camera |
| José Carlos | First Assistant Camera |
| Bárbara Mingo Costales | Wardrobe Assistant |
| Uxue Jiménez | Second Assistant Camera |
| Susana Ibarretxe | Makeup & Hair |
| Ricardo Aranburu | Electrician |
| Ainara López | Assistant Editor |
| Manuel Gago | Electrician |
| Jonás Pérez | Graphic Designer |
| Pablo González | Electrician |
| Antonio Álvarez | Color Timer |
| Álex Abajo | Electrician |
| Elías Fernández | Electrician |
| Pau Costa | Special Effects |
| Charo Diego | Wardrobe Assistant |
| Jesús Luque | Digital Effects Producer |
