Shaggy Rogers (voice)

Matthew Lillard

Acting

Muriel Bagge / Rich Old Lady (voice)

Thea White

Acting

Daphne Blake / Frau Glockenspiel (voice)

Grey DeLisle

Acting

Scooby-Doo / Fred Jones (voice)

Frank Welker

Acting

Velma Dinkley (voice)

Kate Micucci

Acting

The General / Self Help Book (voice)

Jeff Bennett

Acting

Katz / Le Quack / Narrator (voice)

Paul Schoeffler

Acting

Courage / Mr. McGill (voice)

Marty Grabstein

Acting

Eustice Bagge / Computer / Mayor of Nowhere (voice)

Jeff Bergman

Acting

The Lieutenant / Mr. Glockenspiel (voice)

Chuck Montgomery

Acting