Lee is the last name of the creator of the popular animated musical group Alvin and the Chipmunks, Ross Bagdasarian Sr. The TRIO consists of Alvin, Simon, and Theodore, three singing chipmunks who have been entertaining audiences since 1958. Simon is the intellectual leader of the group, while Theodore is the chubby one with a sweet tooth. Alvin is the mischievous one who often gets the group into trouble. All three are RODENTS, making them the perfect characters for a cartoon.