The Flintstones/South Park

Cast

 * Barney Rubble as Stan (Both kind)
 * Bam Bam as Kyle
 * Fred as Eric Cartman (Both grumpy)
 * Shaggy (from Scooby Doo) as Kenny
 * Scooby Doo (from Scooby Doo) as Butters
 * Mr. Slate as Mr. Garrison