Alvin and the Chipmunks - Season 1 - Eps 3: Uncle Harry
A charaltan chipmunk named Harry claims to be Alvin, Simon and Theodore's long lost uncle and says he will have them see their mother as soon as they make enough money. The Chipmunks later not only find out that Harry is not their uncle but also the money he has them making is for a carnival strongman who he has owed for a long time.
About Alvin and the Chipmunks

Title: Alvin and the Chipmunks
First Air Date: 1983-09-17
Last Air Date: 1990-12-01
Status: Ended
Rating: 6.8/10 (from 74 votes)
Language: EN
Seasons: 9
Total Episodes: 172
Network: NBC
Genres: Animation, Comedy, Family
Production Companies: DiC Entertainment, Bagdasarian Productions, Ruby-Spears Productions, Murakami Wolf Swenson, A-1 Productions
Synopsis
Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave.
Cast

Ross Bagdasarian, Jr.
Alvin / Simon / Dave Seville (voice)

Janice Karman
Theodore / Brittany / Jeanette / Eleanor (voice)

Dody Goodman

Nancy Cartwright

Frank Welker

Tress MacNeille

Ross Bagdasarian