He started his career on stage in the 1960s, and since the early 1970s he began an intense career as a character actor, being often cast in roles of inspectors, police commissioners and men in uniform in poliziotteschi and in crime films and TV-series, such as A Special Cop in Action and Distretto di Polizia.
[1] He most notably portrayed Alfio Cacciapuoti in Il maresciallo Rocca opposite Gigi Proietti.
Other actors he dubbed included Eli Wallach and Jack Warden as well as Bill Cosby, Burt Young, Tony Burton, Max von Sydow, Tom Wilkinson, Charles Durning, Patrick McGoohan, Bud Spencer, James Doohan, Mel Brooks and he also voiced Benny Hill in the Italian dubbed version of The Benny Hill Show.
Other roles include Bumblelion in The Wuzzles, Alm-Onji in Heidi, Girl of the Alps, Trigger in Robin Hood, Br'er Bear, Pete in Trombone Trouble and Walt Disney speaking about fire and water.
[citation needed] Fiorentini died in Rome after battling an illness on the evening of 11 December 2014, at the age of 80.