Steve Whitmire
Ernie / Mo / Troll / Frosty Four Leader (voice)
Fran Brill
Prairie Dawn / Zoe / Frosty Four Singer (voice)
Kevin Clash
Benny Rabbit / Elmo / Frosty Four Singer (voice)
Stephanie D'Abruzzo
Flo / Frosty Four Singer (voice)
Jim Henson
Kermit the Frog / Bip Bippadotta / Lavender Anything Muppet in Fat Cat (voice) (archive footage)
Caroll Spinney
Oscar the Grouch (voice) (archive footage)
Frank Oz
Bert / Cookie Monster (credit song) / T-Shirt Salesman / Fat Blue Anything Muppet in Fat Cat (voice) (archive footage)
Jerry Nelson
Kermit the Forg / Kermit the Gorf / Kermit the Grof / Green Anything Muppet in Fat Cat (voice) (archive footage)
Richard Hunt
Harry (voice) (archive footage)
Ivy Austin
Bookworms Leader (voice) (archive footage)
