Seth Green
Various (voice)
Elizabeth Banks
Mrs. Claus / Shana 'Scarlett' O'Hara (voice)
Jacob Crofford
Danny / Lego Boy (voice)
Lucas Grabeel
Justin Bieber / Cashier / Man #1 (voice)
Larry Hama
Self
Seth MacFarlane
Santa Claus (voice)
Matthew Senreich
Executive / Man #2 (voice)
Skeet Ulrich
Duke / Kano / Dave (voice)
Michaela Watkins
Nerd's Mom / Carol / Sarah Cage (voice)
Henry Winkler
Nerd's Dad / Jason Bourne / Christmas Tree (voice)