Marvin Kaplan

as Mark

as Gunny

(1 episode)

(4 episodes) as Mr. Gordon

as Dave D. Fly (voice)

(1 episode) as Dave D. Fly (voice)

(1 episode) as Kornberg's Father

as Morris

as Vampire (voice)

(3 episodes) as Dwight McGonigle

as Typewriter Repairman

as Self

as Uncle Pooch

(20 episodes)

(1 episode)

(10 episodes) as Choo Choo (voice)

(1 episode) as Dr. Kendall

as Choo-Choo (voice)

(1 episode)

(1 episode)

as Man with Doll

(1 episode) as The Chess Master

as Neighbor

as Mouser (voice)

(1 episode) as Irv

(13 episodes) as Sidney Squirrel

as Stick'um (voice)

(97 episodes) as Sidney Squirrel (voice)

(13 episodes) as Shellshock "Shelly" Turtle

(1 episode)

(1 episode)

as Bonaventure Desk Clerk

(1 episode)

(1 episode) as Hilmer Nelson

(1 episode)

(13 episodes) as Skids (voice)

as Carpet Cleaner

(9 episodes)

(1 episode) as Zobar

(1 episode)

as Brother Joy

(1 episode) as Delgado

(1 episode) as Harry

as Mad Man Herman

(13 episodes)

(1 episode)

(1 episode) as Arnold

(1 episode) as The Psychiatrist

(2 episodes) as Sol Alpert

as Frisbee

(1 episode)

(1 episode) as 'Byron Manners'

(1 episode)

(1 episode) as Perkins

(1 episode) as Mr. Kendall

(1 episode)

(1 episode)

as Irwin

as Harry

as English Student

(1 episode) as Stanley

(1 episode) as Marvin

(1 episode) as Alvin

(1 episode) as Self

(1 episode) as Kwazniak

(30 episodes) as Choo Choo (voice)

as Hap Cosgrove

(1 episode) as Joe

(1 episode) as Mr. Monty W. Milfloss

(1 episode) as Irwin

(1 episode) as Self

(1 episode) as Harry Cooper

(1 episode) as The Messenger Boy

(1 episode) as Marvin

as Clifford Van Kunkle

(1 episode) as Marvin

as Sam Kutler

as Timothy Durney

as Arnold Fisher

as Max the Umbrella

(1 episode) as Self/Alfred Pinzmetal

(2 episodes) as Self

as Leon

as Francis - Newspaper Photographer (uncredited)

as Court Stenographer (uncredited)

(1 episode) Writer

(1 episode) Story

(1 episode) Story