Cast and credits of Elmo Says Boo (1997)

Joseph Brancale

Kevin Clash
Elmo / Kingston Livingston III (voice)

Jim Henson
Ernie / Harvey Monster (voice) (archive footage)

Richard Hunt
Kermit the Forg / Frazzletone (voice) (archive footage)

Peter Linz
Additional Muppets (voice)

Joey Mazzarino
Joey Monkey / Darknut (voice)

Jerry Nelson
Count von Count / Frazzle / Maurice Monster (voice)

Carmen Osbahr
Rosita (voice)

Frank Oz
Bert (voice)

Julia Roberts
Herself

Martin P. Robinson
Telly (voice)

David Rudman
Baby Bear / Davey Monkey (voice)

Lillias White
Herself

Christopher Cerf
Chrissy (voice) (uncredited)

Noel MacNeal
Additional Muppets (uncredited)

Mark Saltzman