Barney/Sesame Street

Cast

 * Barney as Big Bird (Barney and Big Bird both have their names starting with "B")
 * The Grinch (from The Wubbulous World of Dr. Seuss) as Oscar the Grouch
 * Shawn as Elmo
 * Kathy as Zoe
 * Michael as Ernie
 * Carlos as Bert
 * Stitch (from Lilo and Stitch) as Cookie Monster
 * BJ as Grover
 * Baby Bop as Prairie Dawn
 * Derek as Telly Monster
 * Kenneth as Count von Count
 * Min as Rosita
 * Scooter McNutty as Baby Bear
 * Kristen as Abby Cadabby
 * Colonel Hathi (from The Jungle Book) as Snuffy
 * Riff as Murray Monster
 * Scooby-Doo (from Scooby-Doo) as Barkley
 * Booker T. Bookworm as Slimey the Worm
 * Toopy and Binoo (from Toopy and Binoo) as Two-Headed Monster
 * Poof (from The Fairly OddParents) as Baby Natasha
 * Mr. Charming (from Little Charmers) as The Amazing Mumford
 * Mayor Milford Meanswell (from LazyTown) as Mr. Johnson
 * Space Boy and Space Dog (from Rolie Polie Olie) as The Martians
 * Tigger (from Winnie the Pooh) as Guy Smiley
 * Flora, Fauna and Merryweather (from Sofia the First) as Chickens
 * Pingu, Pinga, Pingu's Mom, Pingu's Dad, Pingo, Pingg and Pingi (from Pingu) as Penguins
 * Shaun the Sheep, Shirley, Timmy, Nuts, Hazel and The Flock (from Shaun the Sheep) as Lambs
 * Donald Duck, Daisy Duck, Huey, Dewey and Louie (from Mickey Mouse) as Ducks
 * Lips (from The Muppets) as Hoots the Owl
 * Princess Morbucks (from The Powerpuff Girls) as Grundgetta
 * Benny the Bull (from Dora the Explorer) as Herry Monster
 * Dog, Pig, Cat, Bear and Elephant (from Curious Buddies) as Honkers
 * Miss Spider, Squirt, Shimmer, Dragon, Bounce and Holley (from Miss Spider's Sunny Patch Friends) as Twiddlebugs
 * CowBella (from Pajanimals) as Gladys the Cow
 * Mr. Scatterbrain (from The Mr. Men Show) as Forgetful Jones
 * Marvin (from Marvin the Tap-Dancing Horse) as Buster the Horse
 * Peg (from Peg + Cat) as Betty Lou
 * Floyd Pepper (from The Muppets) as Sherlock Hemlock
 * Stanley Griff (from Stanley) as Roosevelt Franklin
 * Buddy Tyrannosaurus (from Dinosaur Train) as Little Bird
 * The Cheat (from Homestar Runner) as Dinger
 * Janja (from The Lion Guard) as Frazzle
 * Fluke (from Finding Dory) as Wolfgang the Seal
 * Hazel (from Doc McStuffins) as Fluffy
 * Captain Hook (from Jake and the Never Land Pirates), Swiper (from Dora the Explorer), Dr. Doofenshmirtz (from Phineas and Ferb), Sheldon J. Plankton (from SpongeBob SquarePants) and Uncle Deadly (from The Muppets) as Grouches
 * Scaredy (from Scaredy Squirrel) as Papa Bear
 * Sandy Cheeks (from SpongeBob SquarePants) as Curly Bear
 * Sally (from Scaredy Squirrel) as Mama Bear
 * Olie Polie (from Rolie Polie Olie) as Stinky the Stinkweed
 * Pig (from Peg + Cat) as Placido Flamingo
 * Fox in Socks (from The Wubbulous World of Dr. Seuss) as Biff
 * Mr. Knox (from The Wubbulous World of Dr. Seuss) as Sully
 * Rowlf the Dog (from The Muppets) as Don Music
 * The Lorax (from The Lorax) as Simon Soundman
 * Nedley the Rabbit (from Maggie and the Ferocious Beast) as Benny Rabbit
 * Yertle the Turtle (from The Wubbulous World of Dr. Seuss) as Lefty the Salesman
 * Fozzie Bear (from The Muppets) as Harvey Kneeslapper
 * Connor, Amaya and Greg (from PJ Masks) as The Three Little Pigs
 * Zach Varmitech (from Wild Kratts) as The Big Bad Wolf
 * Golias (from My Big Big Friend) as Horatio the Elephant