Born in
Rome, Gelli started his career as part of several theatrical companies, and later acting in some
RAI radio and television dramas. He made his film debut in 1962, with a minor role in
Luciano Salce's
A Girl... and a Million. Mainly cast in supporting roles, Gelli was specialised in roles of high-rank politicians and professionals. He played Cimosco in several theatrical editions of
Orlando Furioso directed by
Luca Ronconi, and Don Nicolò Paritelli in three editions of
Rugantino. ==Filmography==