Caroll Spinney
Big Bird / Oscar the Grouch (voice)
Pam Arciero
Grundgetta (voice)
Carmen Osbahr
Rosita (voice)
?
Saman Rouhani
Grouchketeer
?
Megan Willis
Grouchketeer
?
Carisse Elizabeth Moy
Grouchketeer
?
Jamari Richardson
Grouchketeer
?
Richard Hunt
Two-Headed Monster (voice)
Jerry Nelson
Two Heated Monster / "In My Book" Singer (voice)
Fran Brill
Zoe (voice)