South Park and Codename: Kids Next Door/Scooby Doo On Zombie Island

Cast

 * Numbuh 4 as Scooby Doo
 * Numbuh 2 as Shaggy
 * Numbuh 5 as Velma
 * Stan Marsh as Fred
 * Wendy Testaburger as Daphne (Wendy Testaburger and Daphne are both Voiced By Mary Kay Bergman)
 * Katie as Lena (Katie and Lena are both Voiced By Tara Strong)
 * Shelly Marsh as Simone