• 
  Timothy Bjorklund

  regizor
• 
  Alfred Gimeno

  regizor

• 
  Nathan Lane

  Spot Helperman/Scott Leadready II (voci)
• 
  Shaun Flemming

  Leonard Helperman (voce)
• 
  Jerry Stiller

  Frumuselul (voce)
• 
  David Ogden Stiers

  Mr. Jolly (voce)
• 
  Wallace Shawn

  Directorul Strickler (voce)
• 
  Rob Paulsen

  Ian Wazselewski (voce)

• 
  Rita Wilson
• 
  Tim Curry

  Spooky (1 episode, 2001)
• 
  Patrick Warburton

  Security Guard (1 episode, 2000)
• 
  Lauren Tom

  Additional Voice Talent  (unknown episodes)
• 
  Cree Summer

  Additional Voice Talent (unknown episodes)
• 
  John Mahoney

  Tim Tim Tim (1 episode, 2000)
• 
  Shaun Fleming

  Leonard Amadeus Helperman (unknown episodes)

• 
  Mae Whitman

  Leslie Dunkling (unknown episodes)
• 
  Bernadette Peters

  Fifi (1 episode, 2000)
• 
  Don Lake

  Mr. Naven (1 episode, 2000)
• 
  Debra Jo Rupp

  Mrs. Mary Lou Moira Angela Darling Helperman (unknown episodes)
• 
  Pamela Adlon

  Tyler, Tayler, and Trevor (unknown episodes)