Vadis was an actor of Greek descent with lineage tracing back to the infamous island of Chios in the Aegean Sea. This former U.S. Navy sailor and member of the Mae West Muscleman Revue in the late 1950s was a brawny, durable 6'4" man with curly brown hair, bluish green eyes and an affable demeanor.
He was one of many muscle men to take a stab at fame and fortune with the Italian sword and sandal films of the 1960s. Noted film critic Raymond Durgnat famously asked if he was "the brother of Quo?"
His most notable role was The Triumph of Hercules (1964), in which Vadis portrayed Hercules battling golden giants and trying to save his princess love from her evil relative. The film was quickly followed by Hercules the Invincible retitled Son of Hercules in the Land of Darkness, in The Sons of Hercules television package by Embassy Pictures.
He died 11 June 1987 in Lancaster, California, USA, in a car in the desert (accidental drug overdose; acute ethanol and heroin-morphine intoxication). He was survived by his wife Sharon Jessup and his son Nick Vadis, known as "Nick V".
- p.71 Frayling, Christopher Spaghetti Westerns: Cowboys and Europeans from Karl May to Sergio Leone" 1981 Routledge