A Pup Named Scooby-Doo studio after the first season. "A Pup Named Scooby-Doo" is the final television series in the franchise in which Don Messick portrayed Scooby-Doo before his death in 1997, and one of the few in the franchise in which someone other than Frank Welker voiced the character of Fred Jones (child actor Carl Steven took on the role for this series; Welker voiced other bit roles in the series, including as Fred's uncle). Messick and Casey Kasem, the latter of whom voiced Shaggy Rogers, were the only two voice actors from other "Scooby-Doo" series to reprise their roles, and both received
Scooby-Doo in 1997 and Casey Kasem, a strict vegetarian, relinquished the role of Shaggy after having to provide the voice for a 1995 Burger King commercial. Therefore, Scott Innes took over as both Scooby-Doo and Shaggy (Billy West voiced Shaggy in "Scooby-Doo on Zombie Island"). B.J. Ward took over as Velma, and Mary Kay Bergman voiced Daphne until her death in November 1999, and was replaced by Grey DeLisle. These first four direct-to-video films differed from the original series format by placing the characters in plots with a darker tone and pitting them against actual supernatural forces. "Scooby-Doo on Zombie Island",