S4E24 · L'anniversaire surprise

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)

Vanessa Bagdasarian

Eleanor Miller / Lucy/ Kate (Voice)

Ross Bagdasarian, Jr.

Dave Seville (Voice)