Riven

Cantinflas

as Salvador Medina / Chava

Marta Romero

as Laura Villanueva

Miguel Ángel Álvarez

as Dr. Miguel Villanueva

Prudencia Grifell

as Señora Martínez

Wolf Ruvinskis

as Papá de Beto

Guillermo Zetina

as Dr. Marín

Tony Carbajal

as Dr. Pablo Montero

Pepito Velázquez

as Beto

Carlos Riquelme

as Administrador del hospital

Rosa Elena Durgel

as Mamá de Beto

Alberto Catalá

as Paciente ambidextro

Consuelo Monteagudo

as Suegra de neurótica

José Chávez

as Isidro Martínez

Paz Villegas

as Paciente viejita coqueta

Ada Carrasco

as Doña Lola

Arturo Castro 'Bigotón'

as Comisario del pueblo

Guillermo Bravo Sosa

as Paciente malnutrido (uncredited)

Margarita Delgado

as Enfermera (uncredited)

Pedro Elviro

as Paciente con television (uncredited)

Carmelita González

as Paciente neurótica (uncredited)

Ramón Valdés

as Paciente vendado (uncredited)

Alejandro Suárez

as Hippie en cantina (uncredited)

Alfonso Zayas

as Hippie en cantina (uncredited)

Jorge Zamora

as Hombre en cantina (uncredited)

Miguel M. Delgado

Director

Fernando Galiana

Writer

Rosalío Solano

Director of Photography

Luis Gaytán

Script Supervisor

Fidel Pizarro

Production Manager

Raúl Lavista

Original Music Composer

Jorge Busto

Editor

Constanza Hool

Choreographer

Javier Mateos

Sound Recordist

Carlos León

Additional Writing

Raúl Portillo

Sound Editor

Miguel M. Delgado

Screenplay

Gonzalo Gavira

Sound Effects

Jacques Gelman

Producer

Américo Fernández

Assistant Director

Galdino R. Samperio

Sound Re-Recording Mixer

Bertha Chiu

Hairstylist

Ana Guerrero

Makeup Artist

Manuel Fontanals

Production Design

James L. Fields

Sound