Homer Looking at Map (Artwork) This article is about the Katelyn from Marge Be Not Proud.

For the girl with the same name, see Katelyn (Waverly Hills 9-0-2-1-D'oh).

Katelyn is the sister of spoiled kid Gavin, whom he dislikes enough to taunt her by buying two copies of Bonestorm and not letting her have one. It is likely she is shunned by her mother and father, thereby not being spoiled like her brother.