Tim Curry

Narrator (voice)

Joey Mazzarino

Joe Marley / Joey Dickens / Lightning (voice)

Kevin Clash

i-SAM / Elmo (voice)

Caroll Spinney

Oscar the Grouch / Big Bird (voice)

Kristin Chenoweth

Christmas Carol (voice)

Rickey Boyd

Rhubarb the Grouch (voice)

Matt Vogel

Additional Muppet Performer (voice)

Jim Martin

Additional Muppet Performer (voice)

Frank Oz

Bert (voice) (archive footage)

Jim Henson

Ernie (voice) (archive footage)