• 
  Robert David Hall

  Dinky Little
• 
  Gregg Berger

   Frank Little (21 episodes, 1983-1984)
• 
  Bettina Bush

  Lucy Little
• 
  Candace Craig

  (13 episodes, 1983)
• 
  Paul Eiding

  (21 episodes, 1983-1984)
• 
  Pat Fraley

  Slick the Turtle
• 
  Donavan Freberg

  Tom Little
• 
  Jonathan Goldsmith

  (13 episodes, 1983)

• 
  David Hollander

  (13 episodes, 1983)
• 
  Erv Immeman

  (21 episodes, 1983-1984)
• 
  Jimmy Keegan

  Henry Bigg
• 
  Jacques Marin

   Grand'Pa (26 episodes, 1983-1985)
• 
  Mona Marshall

  (13 episodes, 1983)
• 
  Alvy Moore

  Grandpa Little
• 
  Laurel Page

   Mrs. Bigg (21 episodes, 1983-1984)

• 
  Patricia Parris

  Helen Little
• 
  Ken Sansom

   Dr. Hunter / ... (21 episodes, 1983-1984)
• 
  Odile Schmitt

   Tom (26 episodes, 1983-1985)
• 
  Marilyn Schreffler

  (13 episodes, 1983)
• 
  Hal Smith

   Mr. Finnigan (14 episodes, 1983-1985)
• 
  John Stephenson

  (13 episodes, 1983)
• 
  Russi Taylor

  (13 episodes, 1983)
• 
  B.J. Ward

  Ashley Little
• 
  Frank Welker

  Slick the Turtle
• 
  Chris Benard

   Charlie (16 episodes, 1983-1985)