Shaggy's ringtone is the series theme tune.
Shaggy exclaims "Exit, stage right", whilst fleeing from the ghost. This is the catchphrase of Snagglepuss, another Hanna Barbera hero.
Verona Dempsey, a cold, unpleasant near-lookalike of Velma, foreshadows the recurring character Marcie Fleach in Scooby-Doo! Mystery Incorporated (2010).