He works a lot in fotoromanzi in the sixties and (I presume) in the seventies as well. His filmography consists in few movies where his particular bad face gave him always villain roles.
- La cento chilometri .... Man who lifts up Cesare when he wins the race (uncredited)
1960 - Rocco e i suoi fratelli .... Boxing match spectator (uncredited)
1961 - Le avventure di Mary Read .... Stagecoach passenger (uncredited)
1962 - La congiura dei dieci .... Soldier (uncredited)
- Una vita violenta .... Tommaso's friend (uncredited)
1963 - Il processo di Verona .... Fascist officer (uncredited)
1966 - 7 donne d'oro contro due 07 .... Man from Spain (credited as "Giovanni De Benedittis")
1967 - Il triangolo rosso (TV series) S.1, ep.4: "Le due verità" .... Truck driver (credited as "Gianni De Benedittis")
1968 - Un corpo caldo per l'inferno .... Robert Servais (credited as "John Bennedy")
1971 - I racconti di Padre Brown (TV series) - episode: "Il re dei ladri" .... Guard on horse (credited as "John Bennedy")
- Uccidi Django... uccidi per primo!!! .... unknown role (credited)
1972 - L'amante del demonio .... Butler (uncredited)
1978 - Provincia violenta .... Man of Augusto (credited)
1979 - Strategia per una missione di morte .... Sheikh's son (credited)
1980 - La tua vita per mio figlio .... Man of don Michele Ravasino (credited)
- Patrick vive ancora .... Peter Suniak (credited)
1981 - Carcerato .... Bad prison officer (credited)
- Sospetto N. 3 (Anno III): "Gioco mortale" (March 1963) - credited as "Gianni De Benedettis"
- Sospetto N. 5 (Anno III): "Una donna di troppo" (May 1963) - credited as "Gianni De Benedettis
- Genius N. 11: "Violenza a Mayoma" (31 October 1966) - credited as "John Benedit"
- Killing N. 38: "...E dopo uccidi" (April 1968)
- Killing N. 46: "Il premio è morire" (August 1968)
- Barbara N. 11: "Tramonto sul mare" (November 1971) - credited as John Benedit
+ Killing N. 25 - Actor profile