Steve Whitmire

Ernie / Mo / Troll / Frosty Four Leader (voice)

Eric Jacobson

Bert / Grover (voice)

Fran Brill

Prairie Dawn / Zoe / Frosty Four Singer (voice)

Kevin Clash

Benny Rabbit / Elmo / Frosty Four Singer (voice)

Carmen Osbahr

Rosita (voice)

Stephanie D'Abruzzo

Flo / Frosty Four Singer (voice)

David Rudman

Cookie Monster (voice)

Jim Henson

Kermit the Frog / Bip Bippadotta / Lavender Anything Muppet in Fat Cat (voice) (archive footage)

Louise Gold

Chicken (voice)

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)