This holiday special goes back in time to show how Elmo's ancestors--not to mention those of Grover, Big Bird, Bert, Ernie, Oscar the Grouch and Cookie Monster--helped transform "the most unfriendly street in town" into the bright, kind, music-filled place it is today.
Audra McDonald
as Caroler
Zosia Mamet
as Bella
Jim Gaffigan
as Santa Claus
Alan Muraoka
as Alan
Suki Lopez
as Nina
Ryan Dillon
as Elmo (voice)
Eric Jacobson
as Bert / Grover / Two-Headed Monster (voice)
Matt Vogel
as Count von Count / Constable (voice)
Caroll Spinney
as Big Bird / Oscar the Grouch (voice)
Billy Barkhurst
as Ernie (voice)
Jennifer Barnhart
as Holly (voice)
Tyler Bunch
as Louie (voice)
