Cantinflas

Feliciano

Claudio Brook

Alex

Fanny Cano

Bebe

Guillermo Zetina

Jefe de Contraespionaje

Emma Roldán

Doña Angustias

Quintín Bulnes

Agente

Carlos León

Agente

Guillermo Rivas

Espía

Jorge Russek

Espía

Ramón Valdés

Original XU 777

Francisco Reiguera

Odilon Campos Santos

Maricarmen Vela

(uncredited)

Alberto Catalá

(uncredited)

Jorge Mondragón

(uncredited)

Rafael de Córdoba

(uncredited)