<P> Like his brothers , he was originally voiced by Ross Bagdasarian Sr. In the animated series and film , his voice was provided by Janice Karman , Ross Bagdasarian Jr. 's wife and the voice of all three Chipettes . Jesse McCartney voiced Theodore in the live - action / animated film series . </P>
<P> Like his brothers , he was originally voiced by Ross Bagdasarian Sr. In the animated series and film , his voice was provided by Janice Karman , Ross Bagdasarian Jr. 's wife and the voice of all three Chipettes . Jesse McCartney voiced Theodore in the live - action / animated film series . </P>
who voiced theodore in alvin and the chipmunks
who voiced theodore in alvin and the chipmunks
Ross Bagdasarian Sr. Janice Karman Jesse McCartney
Ross Bagdasarian Sr. Janice Karman Jesse McCartney