David, Baby Breeze, Barnaby Heartstrong (David), David Robinson, Bill (David), The Hipster, Boxer David, Jasper Johnson (David), Singer 'I'm Pretty', Sluggo the Great...

Himself

Himself

Niblet, Muppet, Nose McDonald, Agent Van Cuckoo, Enormous Athlete, Ringmaster, Blake Shelton Muppet, Bottle, Ham Actor, Morty the Musical Muse...

Himself

Himself

Forgetful Jones, Poco Loco, Leslie Mostly, Mr. Snuffleupagus, Additional Muppet Performer, Big Kid, Cowboy X, Frog Guitarist, Lefty the Ballplayer, Monster Patient...

Nina

Herself

Mother Goose

Herself

Detective Alfie Betts

Baby Bear, Cookie Monster, Muppet, Humphrey, Fearful, Sonny Friendly, Two-Headed Monster, Big Bad Wolf, Chicago, Flo Bear...

Himself

Professor Buck Awe

Himself

Mando

Herself

Himself, Inspector 4

Julia

Himself

Elmo, Hoots the Owl, Muppet, Clementine, Watson, Baby Natasha, Baby Tooth, J.P., King, Sad...

Wicked Witch of the West

Himself

Uncle Wally, Cousin Henry Heartstrong (Uncle Wally)

Himself

Himself

Himself

Savion

Two-Headed Monster, News Flash Announcer, Count von Count, Herry Monster, The Count, Mr. Johnson, Announcer, The Amazing Mumford, Biff, Sherlock Hemlock...

Mr. Handford