Raúl Arévalo and Miguel García seem like a drop of water to another, but there the similarity ends. Raul is a famous singer, womanizer, despotic, cruel and millionaire. Instead Michael is an honest worker, cheerful and loving who enjoys the simple things forward. Fate will know them and life will never be the same for either.
Unfortunately the movie Si Fulano fuese Mengano is not yet available on HBO Max.
| Directing | Mariano Ozores | Director |
| Production | José Antonio Cascales | Executive Producer |
| Production | Rafael Vázquez Fajardo | Production Manager |
| Camera | Fernando Guillot | Camera Operator |
| Directing | Marisol de Villanueva | Script Supervisor |
| Writing | Mariano Ozores | Screenplay |
| Writing | Antonio Ozores | Story |
| Directing | Zacarías Urbiola | Assistant Director |
| Sound | Peret | Music |
| Crew | José Sacristán | Stunts |
| Crew | Vicente Minaya Ortega | Cinematography |
| Writing | Antonio Ozores | Screenplay |
| Editing | Antonio Ramírez de Loaysa | Editor |
| Art | Ángel Huete | Property Master |
| Sound | Antonio Alonso | Sound Engineer |
| Crew | Julio Pimentel | Stunts |
| Writing | Mariano Ozores | Story |
| Costume & Make-Up | Fernando Pérez Sobrino | Hairstylist |
| Art | Antonio Luna | Property Master |
| Art | Félix Michelena | Settings |
| Crew | Tino Braña | Stunts |
| Art | Adolfo Cofiño | Set Decoration |
| Camera | Manuel Martínez | Still Photographer |
| Editing | Federico Vich | Assistant Editor |
| Art | Augusto Lega | Settings |
| Costume & Make-Up | Carmen Martín | Makeup Artist |
| Crew | Vicente del Águila | Stunts |
| Art | Ricardo Mengíbar | Property Master |
| Art | Antonio Mateos | Property Master |
| Art | Jesús Mateos | Property Master |