José Luis Gómez

Director

Humberto Suárez

Unamuno

Producer

Escalante

President of the Institute of Biotechnology

Ernesto Martel

Fray Pedro de Alcántara

Tomás Bilbatúa

Thanks

Dalmau

Motorista

Emilio

Silvio

Manuel Junco

Ugarte/Valdivia

Polidori

Diego de Velazquez

Pablo Picasso

Leandro

Simón

Doctor Monasterrio

Don Julián

Narrator (uncredited)

Juan Oribe

Corsario

Luis

Miguel