
He is seen more as the younger brother that is either taken advantage of or ignored by both of his brothers. Theodore retains his innocent and gullible nature, but loses the sensibility over his weight as seen in the CGI films that was unlike him in the 1980s. He has a crush on Eleanor Miller, one of The Chipettes who has similar traits of Theodore, who shares his same interest, but not as gullible and she returns his feelings, but feels that he should stand up for himself more. He is shown in Alvin and the Chipmunks: The Squeakquel to be somewhat sensitive about his weight when the bullies poke his belly and butt and call him fat, even going as far as saying that he has " serious junk in the trunk." Alvin and Simon get furious upon seeing their little brother get picked on because of his weight and claw them up as a result, taking care and watching after their little brother. He is shown to have nightmares (as well as frequent fears such as eagles and jungle monsters) and often sleeps with Dave in the first movie. He is very gullible and innocent, always letting Alvin get to him with his schemes. Theodore is a chipmunk who helps out his brothers in their time of need. Additionally, he is seen being close to Simon. He is found to care deeply about his self-image trying on numerous occasions to attempt to become more fit or at the very least, trying to lose a little weight as seen in The Picture of Health and The Brunch Club. Theodore's love for cooking is often seen in episodes such as Father's Day Muffins and Every Chipmunk Tells A Story. Theodore is often seen with a teddy bear in some episodes as well as Alvin and the Chipmunks Meet Frankenstein and Alvin and the Chipmunks Meet the Wolfman. He is also portrayed to be the smallest and the youngest. He is considered naive, friendly, cheerful, and accepting. Theodore is a character that has a great interest in the culinary arts in the 1980’s and 1990’s television series. In The Alvin Show, Theodore was commonly known for his adorable giggling when he and his brothers were being mischievous.
