Self

Self (1 episode)

Writer

Self (1 episode)

Self (1 episode)

Self (voice)

God

Self - Guest (7 episodes)

Self - Presenter (1 episode)

Self (2 episodes)

Groucho Marx (1 episode)

Man Looking Through Window At Melvin Flying

Self (3 episodes)

Self - Guest Host (1 episode)

Self (1 episode)

Ko-Ko

Ko-Ko (1 episode)

Self (1 episode)

Self - Mystery Guest (2 episodes)

Self - Panelist (1 episode)

Suspect in lineup

Suspect in a Police Lineup (uncredited) (1 episode)

John Graham (1 episode)

Self (1 episode)

Self - Guest (1 episode)

Peter Minuit

George Schmidlap (uncredited)

Self (1 episode)

Stage conductor

Groucho Marx (1 episode)

Self (1 episode)

Benjamin Franklin 'Benny' Linn

Emile J. Keck

Groucho Marx

Self - Host (427 episodes)

Sam Grunion

Story

Lionel Q. Deveraux

Ronald Kornblow

Wolf J. Flywheel

S. Quentin Quale

Attorney J. Cheever Loophole

Gordon Miller

Groucho Marx

Dr. Hugo Z. Hackenbush

Writer

Sunbather (uncredited)

Otis B. Driftwood

Rufus T. Firefly

Professor Wagstaff

Caesar's Ghost

Groucho

Captain Jeffrey T. Spaulding

Hammer

Villain