Caroll Spinney

Character: Big Bird / Oscar the Grouch (voice)

Pam Arciero

Character: Grundgetta (voice)

Carmen Osbahr

Character: Rosita (voice)

Saman Rouhani

Character: Grouchketeer

Megan Willis

Character: Grouchketeer

Carisse Elizabeth Moy

Character: Grouchketeer

Jamari Richardson

Character: Grouchketeer

Richard Hunt

Character: Two-Headed Monster (voice)

Jerry Nelson

Character: Two Heated Monster / "In My Book" Singer (voice)

Fran Brill

Character: Zoe (voice)

David Rudman

Character: Top Ten Quiet Time Ideas Announcer (voice)

Martin P. Robinson

Character: Telly Monster (voice)

Joey Mazzarino

Character: The Wise Man (voice)

Ruth Buzzi

Character: Suzie Kabloozie (voice)

Daphne Rubin-Vega

Character: Self

Steve Whitmire

Character: Ernie (voice)

Frank Oz

Character: Bert ("Naptime") (voice)

Jim Henson

Character: Ernie ("Naptime") / Kermit the Frog (voice) (archive footage)

Daphne Rubin-Vega

Character: Herself