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

Professor Buck Awe

Ernie, Kermit the Frog, Guy Smiley, The Baker, Thomas Twiddlebug, Bad Bart, Sinister Sam, Kermit, Additional Anything Muppets, Anything Muppets...

Himself

Uncle Wally, Cousin Henry Heartstrong (Uncle Wally)

Herself

Elmo Slide Dancer