Scooby-Doo on Zombie Island sequences of interplay between Shaggy and Scooby for him. After Don Messick's death, Scott Innes replaced Messick as the voice of Scooby-Doo. Casey Kasem did not reprise his role as Shaggy Rogers as he wished to only voice Shaggy if the character became a vegetarian, like himself. Instead, Billy West provided the voice for Shaggy. Mary Kay Bergman was cast as Daphne when the character was taken in a new direction. B.J. Ward, who played Velma in the "Johnny Bravo" crossover episode, reprised her role in this film. Frank Welker is the only actor from the original series to reprise
Scooby-Doo! Mystery Incorporated in her hair). The series is also the animated debut of Matthew Lillard as the voice of Shaggy, after he portrayed the character in two live-action films, "Scooby-Doo" (2002) and "" (2004). Casey Kasem, the original voice of Shaggy, voiced Shaggy's father in five episodes; this would be his last voice-acting role before his death. Linda Cardellini, who played Velma in the live-action movies, voiced Hot Dog Water, a recurring character in the series. The show also brought back characters seen in previous Scooby-Doo series such as the eco-goth rock band The Hex Girls and Vincent Van Ghoul from "The