When Arnold receives Mr. Hyunh's name in the boarding house's annual Secret Santa draw, he decides to make it the most special Christmas ever for the lonely boarder, and tries to reunite Mr. Hyunh with his long-lost daughter. Meanwhile, Helga agonizes over what would make the perfect present for Arnold.
Lane Toran
as Arnold (voice)
Francesca Marie Smith
as Helga Pataki (voice)
Jamil Walker Smith
as Gerald Johanssen (voice)
Tress MacNeille
as Grandma Gertrude (voice)
Dan Castellaneta
as Grandpa Phil (voice)
Maurice LaMarche
as Big Bob Pataki (voice)
Kath Soucie
as Miriam Pataki (voice)
Olivia Hack
as Rhonda Wellington Lloyd (voice)
Christopher Walberg
as Stinky Peterson (voice)
Anndi McAfee
as Phoebe Heyerdahl (voice)
Baoan Coleman
as Mr. Hyunh (voice)
Hiep Thi Le
as Mai (voice)
