Neutrón contra el Dr. Caronte

Wolf Ruvinskis

as Carlos Márquez

Julio Alemán

as Jaime Yáñez

Armando Silvestre

as Mario Núñez

Rosita Arenas

as Nora Walker

Roberto Ramírez Garza

as Roberto

Guillermo Álvarez Bianchi

as Guillermo Lezman

Rodolfo Landa

as Inspector Lozano

Claudio Brook

as Professor Walker

Jack Taylor

as Professor Thomas (as Grek Martin)

Manuel Vergara 'Manver'

as Tony

José Loza

as Esbirro

Ángel Di Stefani

as Wrestling Trainer

Federico Curiel

as Music Maestro

Carlos León

as Policeman