Director Mario Costa utilized a standard Spaghetti Western aesthetic but relied heavily on Kinski's unhinged performance to differentiate the film from 08/15 (standard) genre entries.
If you were instead referring to the controversial French film La Bête (released in 1975), it deals with themes of repressed sexuality and hereditary curses through a surrealist, erotic lens. The Beast (1970) - IMDb
The Animal in the Outlaw: Decoding Kinski’s Johnny Laster in Mario Costa's ' The Beast ' (1970)
A central theme is how extreme greed can lead to self-destruction and the harm of innocents.
Greed, Gender, and Genre: A Psychoanalytical Reading of 'La Belva'
The film is notable for its focus on a truly irredeemable "hero." Johnny Laster, played by the famously volatile , is a sadistic, sex-crazed bandit and fugitive.
The film explores the chaos caused when a purely malevolent force drives the plot, rather than a quest for justice or revenge. 2. Themes of Greed and Predation