The Grim Adventures of Billy & Mandy/Fairly OddParents: Just Desserts!


 * Billy as Timmy
 * Irwin as Cosmo
 * Wanda as Mandy
 * Harold as Timmy's Dad
 * Gladys as Timmy's Mom
 * Michael (from Barney and Friends) as Fat Timmy Turner
 * Thomas (from Thomas the Tank Engine and Friends) as Fat Cosmo
 * Rosie (from Thomas the Tank Engine and Friends) as Fat Wanda
 * (from Barney and Friends) as Fat Timmy's Dad
 * (from Barney and Friends) as Fat Francis
 * (from Barney and Friends) as Fat Crocker
 * (from Barney and Friends) as Fat Sanjay
 * Maxwell Atoms as Mark Chang
 * Desserts as Themselves
 * Spanich as Healthy Food for Dessert
 * Dimmsdale Citizens Going For Each Others' Throats as Sugar Rush
 * Hit Entertainment as Weight
 * Hit Entertainment characters as Non-puny humans