Baby Felix/The Grim Adventures of Billy and Mandy

Cast

 * Professor as Grim
 * Baby Felix as Billy
 * Baby Kitty as Mandy
 * Felix as Harold
 * Kitty as Gladys
 * Mimi as Mindy
 * Zoo as Nigel Planter
 * James (from Pokemon) as Principal Goodvibes
 * Skippy as Irwin
 * Mookie as Nergal Jr
 * Esmaralda as Mrs. Butterbean
 * Marty as Jeff
 * Rock Bottom as Nergal Jr