Sonia Manzano

Maria

Caroll Spinney

Big Bird / Oscar (voice)

Jim Henson

Kermit / Ernie / Bip Bippadotta (voice)

Frank Oz

Bert / Grover / Cookie Monster (voice)

Fran Brill

"OP" Family Song (voice)

Jerry Nelson

"OP" Family Song / Farley / Two-Headed Monster (voice)

Richard Hunt

Two-Headed Monster (voice)

Martin P. Robinson

Old MacDougal / Rocky (voice)