OK K.O.! Let's Be Heroes/The Simpsons

Cast

 * Mr. Gar as Homer Simpson
 * Carol as Marge Simpson
 * K.O. as Bart Simpson
 * Dendy as Lisa Simpson
 * Bobo as Maggie Simpson
 * Crinkly Wrinkly as Grandpa Abe Simpson
 * Baby Teeth as Santa's Little Helper
 * RMS and Brandon as Lenny and Carl
 * Radicles as Moe Szylak
 * Bernard as Ned Flanders
 * Wilhamena as Maude Flanders
 * Icky and Boris as Rod and Todd Flanders
 * Lord Boxman as Mr. Charles Montgomery Burns
 * Ernesto as Mr. Waylon Smithers
 * Principal Claus as Principal Seymour Skinner
 * Foxtail as Agnes Skinner
 * Colewort as Milhouse Van Houten
 * Clarence Wendell (from Clarence) as Martin Prince
 * Miss Quantum as Edna Krabappel Flanders
 * Grim (from The Grim Adventures of Billy and Mandy) as Krusty the Clown
 * Aquaman (from Justice League) as Captain Horatio McCallister
 * Beardo as Barney Gumble
 * Gregg as Sideshow Mel
 * and more