Alvin is a sports aficionado and the main protagonist of Alvin and the Chipmunks. His enthusiasm is boundless and his despair bottomless. The term look before you leap definitely doesn't apply to Alvin, who is impulsive, charming, 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 younger brothers, getting a date with Brittany, 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 blue eyes (although in the 2007 film Alvin and the Chipmunks, he has amber eyes.)
Simon Seville
Simon is "the smart one". In addition to having an IQ just north of Einstein, Simon possesses a very dry sense of humour as well as a keen wit. Alvin exploits Simon for his crazy schemes because he is smart enough to carry them out. In the end, Simon loves Alvin, although he secretly worries that they share the same gene pool. His signature color is blue and he has blue eyes and black glasses
Theodore Seville
Theodore is the chipmunk of innocence. He is shy, loving, sensitive, chubby, gullible, trusting, naive, irresistible, snack-munching, adorable and cute. In short, he is an easy target for Alvin's manipulations. In fact, Theodore often holds the swing vote between his two brothers' choices of action. Simon appeals to Theodore's better nature while Alvin goes straight to bribery. He is constantly craving snacks and in one episode, tried to eat Alvin's hand because of his hunger.
Theodore's signature color is green, and also has green eyes. He also has blond/tan fur in the film. He plays the drums, the guitar, and others. He is the baby of the group. He is fragile yet unpredictable. At times, childish and be Alvin's follower. He is the glue that binds his brothers' despite Alvin and Simon's differences and regular disagreements.
