Spacium
Rodrigo Almazán (69 episodes)
William S. Benton
Fernando El Católico
De la Guardia
Sr. Kuriansky
Alex Fimman
Robledo
Barone
Marcelo Allende (1 episode)
Bishop Flores
Montelongo
Dr. Greene
Guillermo Kahlo
Mr. Robinson
Padre de Aída
El Viejo (1 episode)
Sánchez
Jeremías
Don Anselmo (1 episode)
Dr. Franklin Miller
Héctor Trejo
Dr. Oszek / Hunchbacked Gypsy
Arne
Chemin De Fer
Paul
Heinrich Werner
Preacher
Colonel Robert Ernest Whitney
Fray Alonso de Peralta
Señor Olmedo
Dr. Maillard / Raoul Fragonard
Armando Vertiz
Gabriel Lima
Ethan Walden
Dr. Pedro Millán
Gonzalo de Medina
Roberto (uncredited)
John Bert
L'évêque
Baron von Ambras
Francis Coplan
Marc Garland
Robert Foster
Peter Cunningham, Royal Air Force
Professor Davenport
Mike Coppolano
The Great Rodolfo
Rev. Poole
Professor Fernando Luna
Dr. Karol
Professor Walker
Sr. Carlos de los Rios, padre de Silvia
Professor Walker
Butler Julio
Mr. Henry
Professor Walker
(uncredited)
Cónsul de México
Dr. Villafranca
Rev. Fleetwood
Arturo's brother
Ruelle (uncredited)
William
Mr. Attorney
Mr. Licenciado (uncredited)
James Boone
Andy Howard (1 episode)
Dexter Dale (1 episode)