Elmo and his Sesame Street friends work with former NASA engineer turned YouTube star Mark Rober to make special presents for a Merry Giftmas exchange.
Mark Rober
Bob Pflugfelder
Bam Singhasaneh
Ryan Dillon
Elmo (voice)
Leslie Carrara-Rudolph
Abby Cadabby (voice)
David Rudman
Cookie Monster (voice)
Eric Jacobson
Grover / Oscar the Grouch / Bert (voice)
Peter Linz
Ernie (voice)
