Joey Mazzarino: Murray Monster, Blogg, Papa Bear, Muppet, Ingrid, Horatio the Elephant, Stinky, Merry Monster, Murray, Stinky the Stinkweed, Joey Monkey, Narf, Chicken, Two-Headed Monster, Big Rad Wolf, Horatio, Nucky Ducky, Pig, Rooster, The Great In-Betweeni, Big Foot, Carson Daly Muppet, Davy Jones, Elephant, Lamb, Letter Y, Merry, Monster, Original Jay, Penguin, Robin, 13, Accordion Player, Additional Performers, Alligator, Alphabet Explorer, Amazing Al, Announcer, Ant, Anything Muppet #1, Baby Bunny, Baby Tooth, Backup Dancer, Baseball Cap, Baseball Hat, Bee, Beetle, Benny, Bernie Broccoli, Bert in 'Conga', Big Bad Wolf, Big Bo Peep, Bird, Birthday Cake, Blögg, Bolo, Boy #2, British Cricket, Bus Passenger #1, Cactus, Cafeteria Member, Camel, Cheese, Clumsy, Colambo, Colambo the Sheep Detective, Construction Worker, Cousin Bear, Crash Helmet, Dan Rather-not, Det. Elliot Stabler, Dog, E, Eggplant, Farmer, Fiverine, Frog, Green AM, Green Transylvanian, Grouch Explorer, Grouch Thief, Gulliver, Gus Hopper, Helmet, Herbert H, Horatio Elephant, Horseman #1, Ingrid, Lyle Large, Izzy, Jack, Jack the Chicken, Jester, Jury Penguin 3, Kingsman, Leonardo da Crunchy, Letter A, Letter R, Letter T, Mack, Mailbox...