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 (character) in every "Scooby-Doo" production from 1969 until 1994's "Scooby-Doo! in Arabian Nights". Voice actor Hadley Kay voiced the character for a brief period in 1997, for two episodes of "Johnny Bravo", and a few television commercials. Scott Innes (also the then-voice of Shaggy) voiced Scooby-Doo in four late 1990s/early 2000s direct-to-video films and continued to voice the character regularly for toys and video games (such as "Scooby-Doo! Night of 100 Frights") until 2008. Neil Fanning provided the voice of the computer-generated Scooby-Doo in the 2002 live-action film and its . Frank Welker (also the voice of Fred since 1969) has