Alvin Seville is a fictional character from the animated television series Alvin and the Chipmunks. He is the lead singer of the group and is known for his energetic personality and love for attention. Alvin often takes the initiative in their adventures, showcasing his confidence and charm. As one of the three chipmunk brothers, Alvin is joined by Simon Seville and Theodore Seville. Together, they navigate various challenges while balancing their music careers and family life with their adoptive father, David Seville. Alvin's character is often portrayed as mischievous but ultimately caring towards his brothers.