Fred

Freddie Prinze Jr.

Acting

Daphne

Sarah Michelle Gellar

Acting

Shaggy

Matthew Lillard

Acting

Velma

Linda Cardellini

Acting

Scooby Voice (voice)

Neil Fanning

Acting

Mondavarious

Rowan Atkinson

Acting

Mary Jane

Isla Fisher

Acting

Voodoo Maestro

Miguel A. Núñez Jr.

Acting

N' Goo Tuana

Steven Grives

Acting

Sugar Ray

Charles Stan Frazier

Acting

Sugar Ray

Craig Bullock

Acting

Sugar Ray

Matthew Murphy Karges

Acting

Sugar Ray

Mark McGrath

Acting

Sugar Ray

Rodney Sheppard

Acting

Zarkos

Sam Greco

Acting

Velma's Friend

Charlie Cousins

Acting

Brad

Kristian Schmid

Acting

Old Man Smithers

Nicholas Hope

Acting

Scrappy Voice (voice)

Scott Innes

Acting

Scrappy Rex Voice (voice)

J. P. Manoux

Acting

Tiny Henchman

Chris Cruickshanks

Acting

Reporter #1

Alex Ruiz

Acting

Reporter #2

Sheryl Benko

Crew

Island Emissary

Rio Nugara

Acting

Bartender Dead Mike's

David Vallon

Acting

Guy in the Vat

Troy MacKinder

Acting

Carol

Michala Banas

Acting

Training Video Woman

Holly Brisley

Acting

Training Video Guy #1

Robert Díaz

Acting

Training Video Guy #2

Remi Broadway

Acting

Melvin Doo

Martin Broome

Acting

Co-Ed

Simone Dumbleton

Acting

Fitzgibbon

Jonathan Coffey

Acting

Coast Guard #2

Michael Caffery

Acting

Airport Attendant

Kyas Sherriff

Acting

Airport Family

Celeste Gosnell

Acting

Airport Family

Bradley Gosnell

Acting

Airport Family

Cayley Gosnell

Acting

Airport Family

Audrey Gosnell

Acting

Spooky Hotel Bartender

Kurt Duval

Acting

Co-Ed Hottie

Janis McGavin

Acting

Autograph Seeker

Emily Gosnell

Acting

Autograph Seeker

Marea Lambert Barker

Acting

Autograph Seeker

Kym Jackson

Acting

Autograph Seeker

Danielle Starkey

Acting

Cavern Henchman

Andrew Bryniarski

Acting

Henchman #1

Craig Behenna

Acting

Henchman #2

Keith S. Bullock

Acting

Creature Voices (voice)

Jess Harnell

Acting

Creature Voices (voice)

Frank Welker

Acting

Pamela Anderson (uncredited)

Pamela Anderson

Acting