Justin Long

Alvin Seville (Voice)

Matthew Gray Gubler

Simon Seville (Voice)

Jesse McCartney

Theodore Seville (Voice)

Christina Applegate

Brittany Miller (Voice)

Anna Faris

Jeanette Miller (Voice)

Ross Bagdasarian Jr.

Alvin Seville (Voice) / Simon Seville (Voice) / Dave Seville (Voice)

Vanessa Bagdasarian

Eleanor Miller / Lucy/ Kate (Voice)

Michael Bagdasarian

Officer Dangus (voice) / Cheesy (voice)

Janice Karman

Theodore Seville (voice) / Brittany Miller (voice) / Jeanett