Kaye Ballard (Minnie Marx), Lewis J Stadlen (Julie Marx (Groucho)), Daniel Fortus (Adolph Marx (Harpo)), Gary Raucher (Leonard Marx (Chico)), Alvin Kupperman (Herbie Marx (Zeppo)), Michael Forella (Milton Marx (Gummo)), Al Checco (Sam Marx (Frenchie)), Don Fellows (Al Shean), Maggie Task (Mrs. McNish), Allan Dellay (Sandow, The Great), Lincoln Maazel (E.F. Albee), Paul Canavan (Theatre Manager), John Simpson (Bert Robwell), Sherry Lane (Mrs. Flanagan), Esther Lapiduss (Mrs. Krupnik), Paul Corman (Telegraph Boy), Joe Coyle (Hochmeister), Marilyn Honeywell (Miss Murdock), Winkie Miller (Miss Taj Mahal), Lenora Nemetz (Miss Eiffel Tower), Donn Simione (Acrobat), Dorothy Behtel (Acrobat), Jan Bruce (Acrobat)