Loretta Long as Susan
Bob McGrath as Bob
Northern Calloway as David
Emilio Delgado as Luis
Sonia Manzano as Maria
Alaina Reed as Olivia
Jim Henson as Ernie
Frank Oz as Bert and Grover
Jerry Nelson as Lord Nelson and Farely
Marilyn Sokol as Marry Banilow
Richard Hunt as various characters
Carroll Spinney as Big Bird and Oscar the Grouch