Cartoon Network/Sesame Street

Cast

 * Bugs Bunny (from Looney Tunes) as Big Bird
 * Jimmy (from Ed, Edd 'n' Eddy) as Elmo
 * Mojo Jojo (from The Powerpuff Girls) as Oscar the Grouch
 * Fred Flintstone (from The Flintstones) as Bert
 * Barney Rubble (from The Flintstones) as Ernie
 * Yogi Bear (from Yogi Bear) as Cookie Monster
 * Edd (from Ed, Edd 'n' Eddy) as Grover
 * Nazz (from Ed, Edd 'n' Eddy) as Prairie Dawn
 * Snagglepuss (from Yogi Bear) as Count von Count
 * Dee-Dee (from Dexter's Laboratory) as Zoe
 * Frankie Foster (from Foster's Home for Imaginary Friends) as Rosita
 * Raj (from Camp Lazlo) as Telly Monster
 * Boo-Boo Bear (from Yogi Bear) as Baby Bear
 * Panini (from Chowder) as Abby Cadabby
 * Gazpacho (from Chowder) as Snuffy
 * Fred Fredburger (from The Grim Adventures of Billy and Mandy) as Horatio the Elephant
 * Jerry (from Tom and Jerry) as Slimey the Worm
 * Spike (from Tom and Jerry) as Herry Monster
 * Scooby-Doo (from Scooby-Doo) as Barkley
 * Pebbles Flintstone (from The Flintstones) as Baby Natasha
 * Foghorn Leghorn (from Looney Tunes) as Hoots the Owl
 * I.M. Weasel (from I Am Weasel) as Guy Smiley
 * Mung Daal (from Chowder) as Sherlock Hemlock
 * Ed (from Ed, Edd 'n' Eddy) as Forgetful Jones
 * Gumball and Darwin (from The Amazing World of Gumball) as Two-Headed Monster
 * Grim (from The Grim Adventures of Billy and Mandy) as The Amazing Mumford
 * Taz (from Looney Tunes) as Frazzle
 * Mordecai (from Regular Show) as Biff
 * Rigby (from Regular Show) as Sully
 * Tom (from Tom and Jerry) as Murray Monster
 * Cow (from Cow and Chicken) as Gladys the Cow
 * Quick Draw McGraw (from Yogi Bear) as Buster the Horse
 * Sarah (from Ed, Edd 'n' Eddy) as Lulu
 * Benson (from Regular Show) as Benny Rabbit
 * Eduardo (from Foster's Home for Imaginary Friends) as The Big Bad Wolf
 * Billy, Mandy and Irwin (from The Grim Adventures of Billy and Mandy) as The Three Little Pigs
 * Echo Echo, Swampfire, Humongosaur and Jet Ray (from Ben 10: Alien Force) as Honkers
 * Steven Universe (from Steven Universe) as Dinger
 * Marvin the Martian and K-9 (from Looney Tunes) as The Martians
 * Tweety (from Looney Tunes) as Little Bird
 * Daffy Duck (from Looney Tunes) as Mr. Johnson
 * Princess Morbucks (from The Powerpuff Girls) as Grundgetta
 * Boskov (from Evil Con Carne) as Papa Bear
 * Cindy Bear (from Yogi Bear) as Mama Bear
 * Anais Watterson (from The Amazing World of Gumball) as Curly Bear
 * Panini (from Chowder) as Ovejita
 * Droopy (from Tom and Jerry) as Stinky the Stinkweed
 * Numbuh 5 (from Codename: Kids Next Door) as Googel
 * Numbuh 3 (from Codename: Kids Next Door) as Phoebe
 * Numbuh 1 (from Codename: Kids Next Door) as Narf
 * Numbuh 2 (from Codename: Kids Next Door) as Mel
 * Grizzly (from We Bare Bears) as Little Chrissy
 * Panda and Ice Bear (from We Bare Bears) as The Alphabeats
 * Flapjack (from The Marvelous Misadventures of Flapjack) as Little Jerry
 * Captain K'nuckles (from The Marvelous Misadventures of Flapjack) as Big Jeffy
 * Pizza Steve (from Uncle Grandpa) as Chrissy
 * Mr. Gus (from Uncle Grandpa) as Rockin' Richard
 * Sylvester (from Looney Tunes) as Maurice Monster
 * Banana Joe (from The Amazing World of Gumball) as Harvey Monster
 * Kevin (from Ed, Edd 'n' Eddy) as Kingston Livingston III
 * Hugh Test (from Johnny Test) as Humphrey
 * Lila Test (from Johnny Test) as Ingrid
 * Skips (from Regular Show) as Bruno the Trashman
 * Muriel (from Courage the Cowardly Dog) as Sherry Netherland
 * Penny Fitzgerald (from The Amazing World of Gumball) as Merry Monster
 * Lion (from Steven Universe) as Chicago the Lion
 * Courage (from Courage the Cowardly Dog) as Wolfgang the Seal
 * Nina J. Neckerly (from Camp Lazlo) as Roxie Marie
 * Roy Rooster (from Garfield and Friends) as Placido Flamingo
 * Wilt (from Foster's Home for Imaginary Friends) as Jackman Wolf
 * Cheese (from Foster's Home for Imaginary Friends) as Harvey Kneeslapper
 * Goo (from Foster's Home for Imaginary Friends) as Deena
 * Gladys (from The Grim Adventures of Billy and Mandy) as Pearl
 * Chicken (from Cow and Chicken) as Poco Loco
 * Eris (from The Grim Adventures of Billy and Mandy) as Miss Finch
 * Madame Foster (from Foster's Home for Imaginary Friends) as Madame Chairbird
 * Walter Bunny (from The Looney Tunes Show) as Daddy Dodo
 * Patricia Bunny (from The Looney Tunes Show) as Mommy Dodo
 * Richard Watterson (from The Amazing World of Gumball) as Donnie Dodo
 * Lola Bunny (from The Looney Tunes Show) as Marie Dodo
 * Robin, Beast Boy, Cyborg, Starfire and Raven (from Teen Titans) as Board of Birds
 * Bloo (from Foster's Home for Imaginary Friends) as Bug
 * Gretchen (from Camp Lazlo) as Grizzy
 * Scrappy-Doo (from Scooby-Doo) as Stuckweed
 * Squeak, Humphrey, Max and Biff (from The Garfield Show), Floyd (from Garfield and Friends) and Nibbles (from Tom and Jerry) as Pesties
 * Mandark (from Dexter's Laboratory) as Grouch Mayor
 * Shnitzel (from Chowder) as Iago the Donkey
 * Victor (from Ed, Edd 'n' Eddy) as Lassie the Goat
 * Jon Arbuckle (from The Garfield Show) as Don Music
 * Johnny Bravo (from Johnny Bravo) as Leo the Party Monster
 * Elroy Jetson (from The Jetsons) as Roosevelt Franklin
 * Jane Jetson (from The Jetsons) as Roosevelt Franklin's Mother
 * Johnny Test and Dukey (from Johnny Test) as Joey and Davey Monkey
 * Josie, Valerie and Melody (from Josie and the Pussycats) as The Oinker Sisters
 * Blossom, Bubbles and Buttercup (from The Powerpuff Girls) as The Squirrelles