• 
  Judy Freudberg

  scenarist
• 
  Tony Geiss

  scenarist

• 
  Aria Noelle Curzon

  Ducky (voce)
• 
  Cody Arens

  Littlefoot (voce)
• 
  Jeff Bennett

  Petrie (voce)
• 
  Elizabeth Daily

  Rhett (1 episode, 2007)
• 
  Max Burkholder

  Chomper (15 episodes, 2007)
• 
  Anndi McAfee

  Cera (15 episodes, 2007)

• 
  Dorian Harewood

  Mr. Thicknose (2 episodes, 2007)
• 
  John Ingle

  Topsy (1 episode, 2007)
• 
  Jessica Walter

  Old One (1 episode, 2007)
• 
  Mikey Kelley

  Hyp (1 episode, 2008)
• 
  Rob Paulsen

  Spike
• 
  Meghan Strange

  Ruby
• 
  Anthony Skillman

  Littlefoot