Characters played by Alfredo Landa
Profesor Mussy
Characters played by Antonio Ferrandis
Profesor Robertson
Characters played by Jorge Rivero
Profesor Jorge Figueredo
Characters played by Silvia Aguilar
Margarita
Characters played by Ricardo Merino
Profesor Petrucelli
Characters played by Alfonso del Real
Profesor Rosenberg
Characters played by Hilda Aguirre
Dra. Doris Green
Characters played by Angélica Chain
Helga
Characters played by Rebeca Silva
Dra. Birley
Characters played by Guillermo Antón
Ayudante del Sr. Smith
Characters played by Xesc Forteza
(as Xexc Forteza)
Characters played by Fernando E. Romero
(as Fernando Romero)
Characters played by Luis Barbero
Padre de Margarita
Characters played by Bonet de San Pedro
[no data]
Characters played by Sally Sitton
[no data]
Characters played by María Bauza
[no data]
Characters played by Sebastián Roses
[no data]
Characters played by Ana Segura
[no data]
Characters played by Miguel Llabres
[no data]
Characters played by María Reus
[no data]
Characters played by Juan Bonet
[no data]
Characters played by Bernardo Morey
[no data]
Characters played by Marga Luz
[no data]
Characters played by Rafaela Aparicio
Madre de Margarita
Characters played by José Luis López Vázquez
Sr. Smith