Alvin Seville is the titular main protagonist of the Alvin and the Chipmunks franchise. He is the lead singer of the Chipmunks and is also the oldest (middle in the 2015 CGI series) child. His brothers are Simon and Theodore. He is sometimes an antagonist and anti-hero of the series.
Alvin wears a red sweater with his signature yellow 'A' and a baseball cap. He has blue eyes and also wears a pair of white and blue pattern shoes.
Alvin is charming, carefree, musical, adventurous and free-spirited. He always seems to come up with crazy schemes to accomplish whatever his goal at the time is; whether it be trying to help his brothers, gaining fame, popularity or attention, getting wealthy, keeping Dave from figuring something out, or getting out of a sticky situation. However, Simon points out to Alvin that his crazy plans could get them into trouble and motivates him to do the right thing.
Alvin can sometimes be mischievous, arrogant, impulsive, and stubborn. People around him, find it really bothersome, especially Dave. Other times Alvin's determination can be viewed as disrespectful. This can all be a constant habit as he has gotten his brothers or himself in trouble at times. But despite all this Alvin does care a lot about his brothers and when he goes too far he apologizes and sets things right for his family, friends and loved ones. Unlike Dave who is their manager of the band, mostly he doesn't act like their manager or even made an effort, Alvin is the one who acts like the manager and willing to help the band do good. Despite Alvin being the oldest and the middle child in the CGI series, he is also considered the dumbest one of the chipmunks.
- In the 1980’s series, Alvin is the oldest brother of the three, but in the CGI series Alvin is the second oldest of the three.
- In the 1960’s series (The Alvin Show) Simon and Alvin didn’t have that much of a rivalry. By the 1980’s series that’s when Alvin’s rivalry with Simon, and Simon’s concern about Alvin’s tricks really came into play, which continues into the CGI series.