Theodore L. Swagmire III is one of the unpopular boys at Westchester Country Day. He is good friends with Brandon and Nikki. He had a huge crush on MacKenzie .He is known for being the school nerd. In Dork Diaries 3, Tales From a Not-So-Talented Pop Star, it is revealed he plays guitar. He tried out for Nikki's band, Actually, I'm Not Really Sure Yet! and was accepted. In Dork Daries 6, Tales from a Not-so-Happy-Heartbreaker, he was firting with Zoey after band practice and later they seem to go to the Sweetheart dance together.
- His family owns Queasy Cheesy.
- Brandon's birthday party took place at his house.
- His choice of school is..........Hogwarts!
- He wants to save his allowance to buy a magic wand.
- He took Zoey to the Sweetheart dance.
- His hair or eye color will possibly be mentioned in the next book but his hair is possibly brown blonde black or mixed and his eyes are similiar to Chloe's