Theodore Seville is a fictional character from the animated series Alvin and the Chipmunks. He is one of the three chipmunks, alongside his brothers Alvin and Simon. Theodore is known for his kind-hearted and gentle nature, often serving as the peacemaker among the trio. He has a love for food, particularly sweets, which often leads to humorous situations. In the series, Theodore is characterized by his round face and soft voice. He is portrayed as the youngest chipmunk, which contributes to his innocent and sometimes naive personality. Theodore's loyalty to his brothers and friends is a central theme in many of their adventures.