He was born in Rome in 1935 and has been on screen since the early 1950's according to some information found about his career. He is one of the most recurring stuntmen in the Bud and Terence movies. He appears in films sometimes with a moustache (his most common look), but also sometimes without a beard. These constant changes of look do not make him easily identifiable sometimes. A small detail that can help in identification is the scar on his right eye, present since 1966 and perhaps even earlier.
During the late ‘70s Roberto started to work also as stunt coordinator.
He still lives in Rome and is the owner of an art gallery in the centre of the city.
- Perseo l'invincibile .... Soldier of Acrisio (uncredited)
1964 - Gli invincibili tre .... Guard (uncredited)
- Il trionfo dei dieci gladiatori .... Soldier (uncredited)
- La rivolta dei pretoriani .... Guard (uncredited)
1965 - Un dollaro bucato .... James henchman (uncredited)
1966 - El Cisco .... Tuscarora bandit (uncredited)
- Le colt cantarono la morte e fu... tempo di massacro .... Scott henchman (uncredited)
- Per pochi dollari ancora .... Riggs henchman (credited as "Robert Alexander")
1967 - Dio perdona ... io no! .... Card player (credited)
- La più grande rapina del west .... Deputy (credited)
1968 - Carogne si nasce .... Street fighter (uncredited)
- T'ammazzo...raccomandati a Dio .... Hartmann henchman (uncredited)
- Uno straniero a Paso Bravo .... Horse thief (uncredited)
1969 - La morte sull'alta collina .... Brawler (uncredited)
1970 - I vendicatori dell'Ave Maria .... Saloon brawler (uncredited)
- Lo chiamavano Trinità... .... Major’s henchman (uncredited)
- Un uomo chiamato Apocalisse Joe .... Berg henchman (uncredited)
1971 - …continuavano a chiamarlo Trinità .... Saloon brawler/Parker henchman (uncredited)
- Diamantendetektiv Dick Donald (TV series, season 1 episode 7 “Mac Bannisters Witwe”) .... Don Kingsley (credited but not identified)
- Er più: storia d'amore e di coltello .... Er Più's Friend (credited)
- Si può fare, amigo .... Big Jim henchman (uncredited)
1972 - Anche gli angeli mangiano fagioli .... Police officer (uncredited)
- …e poi lo chiamarono il magnifico .... Barroom brawler (uncredited)
1973 - Piedone lo sbirro .... Barone henchman (uncredited)
1974 - A forza di sberle .... Chakiris (credit unknown)
- Altrimenti ci arrabbiamo .... Henchman (credited)
- Anche gli angeli tirano di destro .... Maloney henchman (credited)
- Porgi l'altra guancia .... Henchman (uncredited)
1975 - Il sogno di Zorro .... Ruarte soldier (uncredited)
- Piedone a Hong Kong .... Henchman (uncredited)
- Qui comincia l'avventura .... Michelone gangster (uncredited)
1976 - L'Italia s'è rotta .... (credited but not found)
- Poliziotti violenti .... Hitman (uncredited)
- Uomini si nasce poliziotti si muore .... Rico’s gang member (uncredited)
1977 - El Macho .... Duke henchman (uncredited)
- Squadra antitruffa .... Aldo “Er Picchio” Proietti (credited)
1979 - La poliziotta della squadra del buon costume .... (credited but not found)
1981 - Il marchese del Grillo .... Card player (uncredited)
1982 - Parole e sangue (TV miniseries) episodes 1, 2, 3 .... Alessandroni (credited)
1988 - Paradiso infernale .... (credited but not found)
- Il figlio dello sceicco .... Stunt coordinator
1979 - Martin Eden (TV Miniseries) .... Master of arms (in all episodes)
- 1967 - Wanted Johnny Texas as Settler at dance
- 1971 - Tara Pokì as Outlaw
- 1982 - Gunan il guerriero as Fighter