Pacifica Northwest (Voiced by Jackie Buscarino) is the most popular girl in the TV show; Gravity Falls. She is the great-great-granddaughter of the supposed founder of the town, Nathaniel Northwest, and due to this, she treated everyone snobbishly in order to keep up her family's high status and reputation. Before Dipper gave her the courage to speak up against her parents, she was a recurring enemy of the Pines family, mainly as Mabel Pines' rival.
- Jeffrey, Jaden and Hiccup will encounter Pacifica in Jeffrey, Jaden, Hiccup & Friends go to Gravity Falls and be a rival to the team. But by Jeffrey, Jaden, Hiccup & Friends go to Gravity Falls - Northwest Mansion Mystery, Pacifica redeems herself and becomes and ally.