Fred
Daphne
Shaggy
Velma
Patrick Wisely
Old Man Wickles
Jacobo
Heather
Scooby-Doo (voice)
Pat O'Brien
Chauffeur
Ned
Daphne's Tattooed Fan #1 (as Christopher Gauthier)
Daphne's Tattooed Fan #2
Mullet Nerdette #1
Mullet Nerdette #2
Mullet Nerdette #3
Skater Dude #1
Skater Dude #2
Skater Dude #3
Flashback Security Guard #1
Flashback Security Guard #2
Kid on Bike #1
Kid on Bike #2
Buttercup Scout
Man in Suit
Museum Guard
Museum Guard (as Darrell Izeard)
C.L. Magnus
Aggie Wilkins
Scared Man
Investor
Man In Car
Shaggy Chick
Young Shaggy
Young Daphne
Young Fred
Young Velma
Harry Lang
Faux Ghost Patron (as Alan C. Peterson)
Faux Ghost Patron
Pickle Man / Faux Ghost Patron
Vomit Reporter
Reporter #1
Reporter #2
Reporter #3
Reporter #4
Self
Evil Masked Figure
Black Knight Ghost
Miner 49er
Zombie
Ruben Studdard
Dancer
Dancer (as Chantel Hunt)
Band - Big Brovaz
Bass Player
Guitar Player
Keyboard Player
Drum Player (as Doron Bell Jr.)
10,000 Volt Ghost / Zombie / Red Eye Skeleton (voice)
Black Knight (voice)
Tar Monster / Cotton Candy Glob (voice) (as Michael J. Sorich)
10,000 Volt Ghost (voice)
Scooby Brainiac (voice)
Green Eye Skeleton (voice)
Ghost Girl (voice)
The Ghost Clown (uncredited)
Shaggy's Hysterical Fan (uncredited)
Cool Dude (uncredited)