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 |
| Art | Augusto Lega | Settings |
| Crew | José Sacristán | Stunts |
| Art | Antonio Mateos | Property Master |
| Art | Jesús Mateos | Property Master |
| Writing | Antonio Ozores | Story |
| Art | Félix Michelena | Settings |
| Writing | Mariano Ozores | Screenplay |
| Art | Ángel Huete | Property Master |
| Crew | Julio Pimentel | Stunts |
| Crew | Vicente del Águila | Stunts |
| Sound | Peret | Music |
| Directing | Zacarías Urbiola | Assistant Director |
| Editing | Antonio Ramírez de Loaysa | Editor |
| Costume & Make-Up | Fernando Pérez Sobrino | Hairstylist |
| Production | Rafael Vázquez Fajardo | Production Manager |
| Art | Ricardo Mengíbar | Property Master |
| Writing | Antonio Ozores | Screenplay |
| Art | Antonio Luna | Property Master |
| Crew | Tino Braña | Stunts |
| Writing | Mariano Ozores | Story |
| Art | Adolfo Cofiño | Set Decoration |
| Costume & Make-Up | Carmen Martín | Makeup Artist |
| Camera | Manuel Martínez | Still Photographer |
| Sound | Antonio Alonso | Sound Engineer |
| Camera | Fernando Guillot | Camera Operator |
| Editing | Federico Vich | Assistant Editor |
| Production | José Antonio Cascales | Executive Producer |
| Crew | Vicente Minaya Ortega | Cinematography |
| Directing | Marisol de Villanueva | Script Supervisor |