Elenco - Sesame Street: Elmo Says BOO!
Jerry Nelson
The Count
Kevin Clash
Elmo
Martin P. Robinson
Telly
David Rudman
Baby Bear / Davey Monkey
Joey Mazzarino
Joey Monkey / Darknut
Carmen Osbahr
Rosita
Peter Linz
Additional Muppets (voice)
Frank Oz
Bert (voice)
Richard Hunt
Kermit the Forg / Frazzletone (archive footage)
Jim Henson
Ernie / Harvey Monster (voice) (archive footage)
Christopher Cerf
Chrissy (voice) (uncredited)