With "Scooby-Doo's" restored popularity in reruns on Cartoon Network, Warner Bros. Animation and Hanna-Barbera (by then a subsidiary of Warner Bros. following the merger of Time Warner and Turner Entertainment in 1996) began producing one new "Scooby-Doo" direct-to-video film a year, beginning in 1998. These films featured a slightly older version of the original five-character cast from the "Scooby-Doo, Where Are You!" days. The first four DTV entries were "Scooby-Doo on Zombie Island" (1998), "Scooby-Doo! and the Witch's Ghost" (1999), "Scooby-Doo and the Alien Invaders" (2000), and "Scooby-Doo and the Cyber Chase" (2001). Frank Welker was the only original voice cast member to return for these productions. Don Messick had died 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.