Captain Oats is Seth Cohen's toy horse and an object he is quite fond of.
Throughout the Series[]
Before the arrival of his adopted brother Ryan Atwood, Captain Oats was the only "true friend" of Seth, which explains a lot about the young Cohen's personal life. In Season 1, Anna Stern, Seth's ex-girlfriend and close friend, writes a comic book for Captain Oats and Seth as a Chrismukkah present.