Didi O'Shaunassy is an Honor student at Our Lady of Walnut and a minor character in Pepper Ann. She appears in season two's "Doppelganger Didi", though her face is not fully shown. This is her only appearance; however she is mentioned in "Sense and Senselessness". In "Doppelganger Didi", Pepper Ann finds out that there is a twelve year old girl who goes to the private school, Our Lady of Walnut, who looks, sounds and acts just like her. After questioning several people she comes to the conclusion that not only does Didi look like her, but they also have the same interests and quirks.