Wolf Ruvinskis

as Neutron / Carlos Marquez

Gina Romand

as Marga

Rodolfo Landa

as Inspector Rivas

Jesús Salinas

as Chucho

José Gálvez

as Dr. Van Nielsen

Rita Macedo

as Rebecca Núñez

Rubén Rojo

as Oswaldo

Alberto Mariscal

as Captain Julio Fuentes

Graciela Lara

as Berta

Nathanael León

as Gaston

Guillermo Orea

Antonio Raxel

Guillermo Hernández

as Lobo Negro

Julián de Meriche

as Sergio Romanov