Pacifica Northwest

Pacifica Northwest is a spoiled, snotty valley girl stereotype who is Mabel's rival. She is played by Puppy1331.

Appearance
Pacifica is 12 years old. She has blonde highlighted hair, blue eyes, and pale skin. She is tall and pretty, and wears a considerable amount of makeup. Her main outfit consists of a lavender knee-length dress, a dark lavender jacket, black leggings, a thick brownish-purple belt, large purple hoop earrings, and pinkish-cream fashion shearer boots. Her alternate outfit is a dark lilac evening gown with black faux-fur trim, burgundy gloves, diamond earrings, and diamond-studded pumps.

Personality
Pacifica is a stereotypical rich valley girl. She is viewed as snotty, selfish, and spoiled by the majority of those who know her, namely the Pines Twins. However, after Dipper Pines helped her rid Northwest Manor of a haunting (and herself of her parents' brainwashing), she realized that maybe there was a better side to her.

Mabel Pines
Pacifica is Mabel's rival, due to the fact that Pacifica is very mean to her. On their first meeting, Pacifica called Mabel silly, ridiculing the nachos she had been wearing as earrings and the basketball-playing puppy on her sweater. She then told Mabel that she was "embarrassed for [her]" and then told the watching crowd to "give her a hand, everybody!". When Stan Pines exposed Gideon Gleeful's fraudulence to the town, she was seen on one of the screens throwing darts at a picture of Mabel, indicating that she might be jealous of her rival's spunky attitude and loving family.

Dipper Pines
Dipper and Pacifica rub each other the wrong way, due to Pacifica's constant picking on Mabel. Pacifica sees Dipper as lame and is not shy to tell him that. However, after he helped her rid her family's mansion of a vengeful ghost, they began to see each other in a new light. They later became friends, as shown when the Pineses invited her to Dipper's and Mabel's 13th birthday party.

Preston and Priscilla Northwest
Pacifica has a strained relationship with her parents. They are very controlling, and used a form of Pavlovian conditioning on her since a young age to manipulate her into doing what they want. After she helped Dipper rid her mansion of a ghost, their relationship became even tenser, but she and Dipper got a small revenge of their own by tracking mud and dumping drinks all over Preston's and Priscilla's favorite carpet.

Trivia

 * Unlike in the canon universe, Pacifica does not have solid blonde hair. Her hair instead is light brown with blonde highlights, attesting to the fan theory than her hair is bleached blonde and that her natural hair color is brown.
 * This theory is due, in part, to the fact that both Preston and Priscilla have brown hair, so it is rather unlikely that Pacifica's hair is naturally blonde.