- For other uses, see Kelly (Disambiguation).
Kelly is first added to the background characters in "Breast Cancer Show Ever", along with several other 6th graders, where she is seen watching Cartman fight Wendy with the rest of the school. After this episode, she begin to be commonly used as a prop in the assembly, cafeteria and playground scenes.
Kelly is a medium-sized 6th grader with short curly blonde hair. She wears a gray shirt with green flower outlines and blue jeans.
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- "Breast Cancer Show Ever" - Debut; Seen watching the fight between Wendy.
- "The Ring" - Seen in the background.
- "Jewpacabra" - Seen in the Easter egg hunt.
- "#REHASH" - Seen in Lorde's concert with Shelley and Stacy.
- "Stunning and Brave" - Seen in the background.
- "Hummels & Heroin" - Seen watching Marcus Preston's speech.
- "Time To Get Cereal" - Seen in the playground.
- "Tegridy Farms Halloween Special" - Seen at the school assembly.
- "Let Them Eat Goo" - Seen in the cafeteria.
- "Board Girls"- Seen at the Board Girls Gaming Club.
- "Christmas Snow" - Seen ice skating.
- "The Pandemic Special" - Seen in quarantine at school with the other students.