Kimberly is a teenage girl with light brown hair. In one of the family's pictures, she's seen wearing a necklace and a dark red shirt.
Her father, Charles, describes her as a "good girl", who would never want to stay with someone like her older brother.
Kimberly was first seen in two pictures with her two brothers in Part 157. She's later mentioned by her father in Part 192 and Part 193, who explains how she left because she couldn't stand to see Brian teasing Kenny.