Frank Welker

Freddie Jones / Scooby-Doo (voice)

Mindy Cohn

Velma Dinkley (voice)

Grey DeLisle

Daphne Blake (voice)

Matthew Lillard

Shaggy Rogers (voice)

Robin Atkin Downes

Fortius / Announcer (voice)

Troy Baker

Sergey Plotnikov (voice)

Josh Keaton

Steve Looker (voice)

Janet Montgomery

Diane (voice)

James Patrick Stuart

Jack Riggins / Igor (voice)

Domitilla D'Amico

Daphne Blake (uncredited)