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)