In Madrid, Spain, a mysterious serial killer ruthlessly murders his victims by recreating the first appearance of several comic book superheroes. Cosme, a veteran police inspector who is about to retire, works on the case along with the tormented inspector David Valentín and his own son Jorge Elías, a nerdy young man who owns a comic book store.
Unfortunately the movie Unknown Origins is not yet available on HBO Max.
| Directing | David Galán Galindo | Director |
| Production | Alberto Aranda | Producer |
| Production | Miguel González Familiar | Co-Producer |
| Production | Eduardo Jiménez Abad | Co-Producer |
| Production | Kiko Martínez | Producer |
| Production | Marta-Libertad Castillo | Executive Producer |
| Editing | Leire Alonso | Editor |
| Production | Juana Martínez | Casting |
| Art | Roger Bellés | Production Design |
| Art | Lesley Arias | Art Direction |
| Production | Emilio Giménez | Production Manager |
| Directing | Rafael Carmona | Assistant Director |
| Costume & Make-Up | Paula Cruz | Makeup Designer |
| Costume & Make-Up | Jesús Guerra | Hair Designer |
| Costume & Make-Up | Nacho Díaz | Makeup Effects Designer |
| Costume & Make-Up | Elena de Lorenzo | Costume Designer |
| Sound | David Rodríguez | Sound Editor |
| Sound | Mar González | Sound Recordist |
| Sound | Laia Casanovas | Sound Mixer |
| Visual Effects | Helmuth Barnert | Visual Effects Supervisor |
| Crew | Albert Martínez | Special Effects |
| Crew | Marc Padró | Stunt Coordinator |
| Camera | Rita Noriega | Director of Photography |
| Sound | Federico Jusid | Original Music Composer |
| Sound | Kase.O | Songs |
| Writing | David Galán Galindo | Screenplay |
| Writing | Fernando Navarro | Screenplay |
| Writing | David Galán Galindo | Novel |
| Production | José Luis Jiménez | Production Director |
| Production | Agustín Bossi | Co-Producer |
| Production | Pol Bossi | Co-Producer |
| Production | Ignacio Salazar-Simpson | Co-Producer |
| Production | Ricardo Marco Budé | Co-Producer |
| Directing | Elena Valderde | Second Assistant Director |
| Directing | Christian Jorge 'Krykry' García | Second Assistant Director |
| Directing | Aldonza Gómez | Script Supervisor |
| Camera | Xabier Iriondo | "A" Camera Operator |
| Camera | Edu Martínez Guirles | "B" Camera Operator |
| Camera | Edu Martínez Guirles | Steadicam Operator |
| Camera | André Paduano | Still Photographer |
| Art | Judith Ferrer | Property Master |
| Art | Eduard Riu | Graphic Designer |
| Lighting | Peru Herrero | Gaffer |
| Camera | Fernando Bizcocho Sánchez | Key Grip |
| Visual Effects | Lluís Rivera | Special Effects Supervisor |
| Editing | Paula Ruiz | Color Grading |
| Production | Lucía Carrero Rodríguez | Post Production Coordinator |
| Production | Alejandro Gigan | Post Production Coordinator |
| Visual Effects | Bernat Aragonés | Visual Effects Supervisor |
| Sound | Manuel Carrión | Foley Artist |
| Crew | Berto Romero | Thanks |
| Crew | José Sacristán | Thanks |
| Crew | Miguel Rellán | Thanks |
| Crew | Cels Piñol | Thanks |
