Her second speaking role was in "Ass Burgers", she was surprised with how good Cartman's hamburgers were in the school hallway.
She has wavy, gray hair. She wears a teal shirt, dark blue pants, two light pink bows in her hair, and black shoes.
Riley reading an example of the T.M.I. formula.
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Meagan in "Skank Hunt".
- "Super Fun Time" - Seen holding hands with Jenny Simon; she was also one of the hostages.
- "Elementary School Musical" - She is seen watching boys singing at the end.
- "The Ring" - She is seen in the hallway as well as the Jonas Brothers' concert.
- "Fishsticks - Seen in in the school's hallways with Boy with Blond Hair.
- "HUMANCENTiPAD" - She was one of the kids Cartman mocks for not having an iPad.
- "T.M.I." - appears in the 4th grade classroom when Randy Marsh taught teaching the class the "adjusted penis size" formula.
- "Ass Burgers" - Kyle offers her a hamburger; her name is revealed.
- "Jewpacabra" - Seen at the Easter egg hunt.
- "Butterballs" - Seen in the background at the school assembly.
- "Cartman Finds Love" - Seen in the background in the school cafeteria.
- "Let Go, Let Gov" - Seen in the playground.
- "Go Fund Yourself" - Seen in the background on the school bus.
- "Gluten Free Ebola" - Seen in the background shunning the boys.
- "Cock Magic" - Seen in the background of Mr. Garrison's class.
- "Member Berries"
- "Skank Hunt" - Seen in the school's library. Seen taking a breakup letter to her boyfriend.
- "Wieners Out" - Seen at the volleyball game when the boys begin their Wieners Out movement during the national anthem.
- "Douche and a Danish" - Seen in the battle between the girls and the boys.