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José Nieto as Álvaro Velasco, 'Cabeza de Hierro' |
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Ana Mariscal as Aurora |
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María Martín as Irene |
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Adriano Rimoldi as Mosca |
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Ángel de Andrés as Polilla |
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Antonio Bofarull as Calabaza |
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José Rivero as Doctor Hedian |
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Camino Garrigó as Doña Luisa |
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Fernando Galiana as Julio Enrique |
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Mary Santpere as |
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José María Lado as |
| Directing | Ignacio F. Iquino | Director |
| Writing | Ignacio F. Iquino | Writer |
| Writing | Cecilio Benítez de Castro | Writer |
| Sound | Ramón Ferrés | Music |
| Crew | Isidoro Goldberger | Cinematography |
| Art | José Pellicer | Set Decoration |
| Art | Juan Alberto Soler | Set Decoration |
