| Side A | |||
| 1. | La máscara de hierro | 04:51 | Show lyrics |
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| 2. | Soldado de metal | 03:12 | Show lyrics |
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| 3. | Locomotora | 04:01 | Show lyrics |
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| 4. | Rey de reyes | 05:53 | Show lyrics |
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| Side B | |||
| 5. | Hijo de mil | 04:09 | Show lyrics |
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| 6. | Blues del infierno | 03:47 | Show lyrics |
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| 7. | Hombre nuclear | 04:11 | Show lyrics |
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| 8. | El regreso del dragón | 05:23 | Show lyrics |
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| 35:27 | |||
| Original line-up | |
| Band members | |
| Juan Carlos "Olaf" Mangialavore | Vocals, Guitars |
| Frank Mangialavore | Keyboards |
| José "Cito" Vitulli (R.I.P. 2019) | Bass, Vocals (backing) |
| Walter "Fantasma" Sierra | Drums |
| Miscellaneous staff | |
| Juan Carlos "Olaf" Mangialavore | Executive producer, Producer |
| Mario Ferrara | Photography |
| Amilcar Gilabert | Mastering |
| Mario Dalton | Engineering |
| Daniel Luccerini | Design |
| Christian Argañaraz | Engineering |
| Original line-up | |
| Juan Carlos "Olaf" Mangialavore | Vocals, Guitars |
| Frank Mangialavore | Keyboards |
| José "Cito" Vitulli (R.I.P. 2019) | Bass, Vocals (backing) |
| Walter "Fantasma" Sierra | Drums |
| Original line-up | |
| Juan Carlos "Olaf" Mangialavore | Executive producer, Producer |
| Mario Ferrara | Photography |
| Amilcar Gilabert | Mastering |
| Mario Dalton | Engineering |
| Daniel Luccerini | Design |
| Christian Argañaraz | Engineering |
Recording information:
Recorded con Estudios Panda, Buenos Aires, between May and June 1991.