Antonio Cantafora

Paul

José Luis Ayestarán

Kronos/Supersonic Man

Cameron Mitchell

Dr. Gulik

Diana Polakov

Patricia Morgan / Patricia Gordon

José María Caffarel

Prof. Morgan / Prof. Gordon

Frank Braña

Peterson

Javier De Campos

Drunk

Tito García

George

Luis Barboo

Harrison

Quique Camoiras

Bill

Ángel Ter

Emilio Higuera

Luis Castilla

Emilio Fornet

Marta Fernández Muro

José Antonio Rico

Teófilo Martínez

(voice)

Óscar Simón