Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Psicosis | 1960 | |
| Writer | Psycho (Psicosis) | 1998 | |
| Writer | Psicosis IV: El comienzo | 1990 | |
| Writer | Two Bits | 1995 | |
| Actor | Going to Pieces: The Rise and Fall of the Slasher Film | 2006 | Himself |
| Writer | La gata en la terraza | 1969 | |
| Writer | La orquidea negra | 1958 | |
| Writer | Trans-Gen, los genes de la muerte | 1987 | |
| Writer | Sombras de sospecha | 1961 |