Alvin is the protagonist of Alvin and the Chipmunks. His enthusiasm is boundless and his despair bottomless. The term look before you leap does not usually apply to Alvin, who is impulsive, charming, and musical. The character always seems to make up hare-brained schemes to get what his goal is at the time, whether it be trying to help his brothers, keeping Dave from figuring something out, or getting out of a sticky situation. However, Alvin seems to refer to his often illogical or crazy plans as "challenging the ordinary".
Alvin's signature color is red, and he has brown eyes. On July 30, 2002, Alvin was #44 on TV Guide's list of top 50 best cartoon characters of all time.
Like his brothers, he was originally voiced by Ross Bagdasarian, Sr. In the animated series and film, he was voiced by Ross Bagdasarian, Jr. Justin Long voiced Alvin in the live-action/animated film series trilogy of "Alvin and the Chipmunks".