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Cantinflas as Lopez 'Lopitos' / His Excellency the Ambassador of Los Cocos |
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Sonia Infante as Lolita |
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Guillermo Zetina as Lic. Don Tirso de la Pompa y Pompa, consejero |
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Tito Junco as General León Balarraza, agregado militar |
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Miguel Manzano as Don Serafín Templado, secretario |
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José Gálvez as Camarada Osky Popovsky, primer ministro |
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Víctor Alcocer as Almirante Neptuno Aguado, agregado naval |
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Maura Monti as Camarada Tania |
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Eduardo Alcaraz as Don Salustio Menchaca, embajador de Los Cocos |
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Fernando Wagner as Representante de Salchichonia |
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Carlos Riquelme as Presidente de la República de Pepeslavia |
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Quintín Bulnes as Mayordomo Petrovsky |
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Eduardo MacGregor as Camarada Vasily Vasilov, ministro de relaciones exteriores |
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Luis Manuel Pelayo as Sr. Director |
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Fernando Mendoza as Comisario |
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Antonio Medellin as Embajador de Karamba |
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Alberto Galán as Secretario general |
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Alberto Catalá as Portero |
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Ricardo Adalid as Portero de asamblea (uncredited) |
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Daniel Arroyo as Espectador asamblea (uncredited) |
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Farnesio de Bernal as Representante asamblea (uncredited) |
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Victorio Blanco as Don Milos Popovich (uncredited) |
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Queta Carrasco as Invitada a recepción (uncredited) |
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Velia Lupercio as Invitada a recepción (uncredited) |
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Enrique García Álvarez as Invitado a recepción (uncredited) |
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Manuel Trejo Morales as Invitado a recepción (uncredited) |
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Manuel Zozaya as Invitado a recepción (uncredited) |
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Jorge Casanova as Secretario (uncredited) |
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Gerardo del Castillo as Embajador de Tequesquite (uncredited) |
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Aarón Hernán as Representanre de Bolognia (uncredited) |
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Victor Eberg as Comisario en cena (uncredited) |
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Pedro Elviro as Comisario en cena (uncredited) |
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Rubén Márquez as Comisario en cena (uncredited) |
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Fernando Yapur as Comisario en cena (uncredited) |
| Directing | Miguel M. Delgado | Director |
| Writing | Cantinflas | Story |
| Art | Roberto Silva | Production Design |
| Production | Alberto A. Ferrer | Production Manager |
| Sound | James L. Fields | Sound |
| Crew | Juan Muñoz Ravelo | Special Effects |
| Costume & Make-Up | Alfonso Govea | Costume Design |
| Sound | Raúl Portillo | Sound Editor |
| Camera | Ángel Corona | Still Photographer |
| Camera | Gabriel Figueroa | Director of Photography |
| Production | Jacques Gelman | Producer |
| Crew | Rosalío Solano | Cinematography |
| Writing | Carlos León | Dialogue |
| Editing | Jorge Bustos | Editor |
| Costume & Make-Up | Ana Guerrero | Makeup Artist |
| Costume & Make-Up | Guadalupe Gorráez | Hairstylist |
| Sound | Galdino R. Samperio | Sound Re-Recording Mixer |
| Sound | Sergio Guerrero | Original Music Composer |
| Directing | Manuel Muñoz 'Torito' | Assistant Director |
| Crew | Luis Fernández | Sound Recordist |
| Directing | Luis Gaytán | Script Supervisor |
