He originated the roles of the 3rd Poet in Caligula (1960), Pasha in Once There Was a Russian (1961), The Deputy in Purlie Victorious (1961), and Mr. Andrikos in The Irregular Verb to Love (1963).

Carmel believed that Arnaz was illegally taking four salaries from the series—producer, creator, writer, and director—and this led him to quit the show (incidentally, the series was canceled the following year).

[3] Carmel's television guest roles included the accountant Doug Wesley on CBS's The Dick Van Dyke Show and Colonel Gumm on ABC's Batman.

He also appeared in roles on The Patty Duke Show; I Spy; Blue Light; The Everglades; Hogan's Heroes; Car 54, Where Are You?

; The Munsters; Voyage to the Bottom of the Sea; Hawaii Five-O; The High Chaparral; McMillan & Wife; All in the Family,[4] and The San Pedro Beach Bums.