Season Regulars 7

1. 

   Justin Long

   Alvin Seville (Voice)

2. 

   Matthew Gray Gubler

   Simon Seville (Voice)

3. 

   Jesse McCartney

   Theodore Seville (Voice)

4. 

   Christina Applegate

   Brittany Miller (Voice)

5. 

   Anna Faris

   Jeanette Miller (Voice)

6. 

   Vanessa Bagdasarian

   Eleanor Miller / Lucy/ Kate (Voice)

7. 

   Ross Bagdasarian, Jr.

   Dave Seville (Voice)

Guest Stars 0

There are no cast records added to Theo Knows Best.

Crew 0

There are no crew records added to Theo Knows Best.