Martin P. Robinson

as Telly Monster (voice)

Fran Brill

as Zoe (voice)

Desiree Casado

as Gabi Rodriguez

Caroll Spinney

as Oscar the Grouch (voice)

Lexine Bondoc

as Lexine

Michael Bundy

as Michael

Joey Mazzarino

as Stinky the Stinkweed (voice)

Jerry Nelson

as The Amazing Mumford

Alice Dinnean

as Mouse (voice)

Carlo Alban

as Carlo

Jim Henson

as Ernie (voice) (archive footage)