• 
  Jonathan Silverman

  Carson Perry
• 
  Patrick Muldoon

  Tom Austin
• 
  Kenny Beaumont

  Barry Melch
• 
  James Arnold Taylor

  Robo-Dog
• 
  Charles Frierman

  Science Fair Judge #1
• 
  Jason Zavitz

  Volcano Kid
• 
  Paul Boffano

  Science Fair Judge #2
• 
  Michael Campion

  Tyler Austin

• 
  Katherine Dudley

  Science Fair Judge #3
• 
  Eva Coleman

  Melch Fan #2
• 
  Alicia C. Del Aguila

  Melch Fan #1
• 
  Brooklynn Prince

  Mira Perry
• 
  Ileana 'Blue' Johns

  Science Fair Judge #4 (as Ileana Johns)
• 
  Bonnie Miller

  Cynthia Perry
• 
  Bob Giordano

  Mr. Snyder