Giovanni Vari was a tall, usually-bearded actor, working in Italian films from the early 50's until the mid 60's, including 4 with Lex Barker during 1959-60. His signature role was playing pirates.
In 1965, just when he was starting to score larger credited roles, he retired from acting and changed careers, becoming a producer, with production credits on 8 westerns between 1965-75. No further biographical details are known.
Given that there are large gaps between his credited roles in the 50's I would expect that there are more uncredited 50's roles to be found. He may not be so easy to recognise in roles where he is clean shaven.
- La cieca di Sorrento .... Basileo's henchman (credited)
1956 - Mai ti scorderò .... Vettori (credited - role unconfirmed)
1959 - Cartagine in fiamme .... One of Sidone's followers (uncredited)
- I Reali di Francia .... Angry villager (uncredited)
- Il cavaliere del castello maledetto .... Farmer (credited)
- Il mondo dei miracoli .... Tall man who doesn't speak lines (uncredited)
- L'arciere Nero .... Fighter (uncredited)
- La scimitarra del saraceno .... Pirate (credited)
- Nel segno di Roma .... Temple guard (uncredited)
1960 - Fra Manisco cerca guai... .... Monk (credited)
- I baccanali di Tiberio .... Ursus (credited)
- I pirati della costa .... Porro (credited)
- Il cavaliere dai cento volti .... Quinto (credited)
- Il conquistatore d'Oriente .... One of Nadir's men (uncredited)
- La strada dei giganti .... Miner (uncredited)
- La vendetta dei barbari .... Susin (credited?)
- Messalina, Venere imperatrice .... Viking (uncredited)
- Robin Hood e i pirati .... Sospiri (credited)
- Un dollaro di fifa .... O'Brien (credited)
1961 - Barabba .... Worker in sulphur mines (uncredited)
- Il conquistatore di Corinto .... Torturer (uncredited)
- La guerra di Troia .... Achillas (uncredited)
- Rosmunda e Alboino .... One of Delfo's men (credited)
1962 - Arrivano i titani .... Titan (uncredited)
1963 - Il Duca nero .... Morialdo (credited)
- La cieca di Sorrento .... Dr. Welby's patient (credited as "John Warrel")
1964 - Due mafiosi nel Far West .... Prison warden (credited)
- Gli invincibili dieci gladiatori .... Typho (credited as "John Warrell")
- L'uomo mascherato contro i pirati .... Captain Pedro Ramon Francisco Garcia (credited as "John Vari")
- La guerra dei topless .... role? (credited)
1965 - La meravigliosa Angelica .... Caller in the market (uncredited)
1972 - L'uomo mascherato contro il Corsaro Nero (filmed in 1964) .... The Black Pirate (credited as "John Warren")
- 30 Winchester per El Diablo (credited as writer and producer, as "John Warrel")
1967 - Giarrettiera Colt (credited as Director of production)
1972 - La lunga cavalcata della vendetta (credited as Producer)
1973 - Il figlio di Zorro (credited as Producer)
- Il giustiziere di Dio (credited as Producer)
- Sei Bounty Killers per una strage (credited as Production manager)
- Una colt in mano al diavolo (credited as Producer)
1975 - Fermi tutti! è una rapina (credited as Producer)
- La leggenda del piave (1952) (ANICA)
- Salambo (1960)
- L'ammutinamento (1961)