• 
  Neil Fanning

  Scooby - Narrator
• 
  C. Ernst Harth

  Miner 49er

• 
  Freddie Prinze Jr.

  Himself/Fred
• 
  Seth Green

  Himself - 'Patrick'
• 
  Matthew Lillard

  Himself - 'Shaggy'
• 
  Sarah Michelle Gellar

  Herself - 'Daphne'
• 
  Alicia Silverstone

  Herself - 'Heather Jasper Howe'
• 
  Linda Cardellini

  Herself - 'Velma'

• 
  Bill Boes

  Himself - Production Designer