Toby
Ian
Dave
Alvin (voice)
Simon (voice)
Theodore (voice)
Eleanor (voice)
Jeanette (voice)
Brittany (voice)
Dr. Rubin
Julie
Aunt Jackie
Ryan
Xander
Becca
Emily
Valentina
Emcee
Charice Pempengco
Doctor
Nurse
Airline Rep
Agent
Paramedic
Jeremy
Honor Society
Screaming Fan
Digger the NASCAR Gopher (voice)
Meerkat Manor Narrator (voice)
Chipmunk Dancer
Chipette Dancer
Li'l Rosero Dancer
Cheerleader (uncredited)
Alvin (singing voice) (uncredited)
Theodore / The Chipettes (singing voice) (uncredited)
Eleanor - Performer (voice) (uncredited)
Simon Dance Double (uncredited)
Football Referee (uncredited)
Principal Dancer (uncredited)
Dodgeball Player (uncredited)
Charice Bassist (uncredited)
High School Student (uncredited)
Dancer (uncredited)
Stadium Announcer (uncredited)