Pacifica Northwest is the second love interest of Dipper Pines from the TV show, Gravity Falls.
In the episode, "Northwest Mansion Mystery," as the Northwests have a practice dinner for their annual party taking place the following day, various objects around the manor start floating and attacking Pacifica and her parents. She is then told by her father to enlist Dipper Pines to get rid of the problem. Dressing up in an attire so she isn't recognized at the shack, she does as told, and approaches Dipper with the request at the Mystery Shack. Though he refuses at first, Dipper ultimately accepts, in return Pacifica has to invite Mabel and her friends to the party. Arriving at the manor, Pacifica changes Dipper's outfit into a formal one, suited for the occasion. Pacifica then points him to the direction where the paranormal activity has been happening the most. While Dipper believes it to be a category 1 ghost, he is soon corrected when the taxidermy animal heads on the wall starts chanting "ancient sins," blood oozes out of their eyes and mouths, and the ghost appears from the fire place. Dealing with a category 10 ghost, they run for their lives, looking for a silver mirror to trap the ghost in. When they reach a sparkling clean white room, Pacifica prevents herself and Dipper from entering, as their shoes were dirty and she didn't want mess up her parents' most prized room. Their fighting lands them into a secret room. The ghost finds them and flies at Pacifica but she is saved by Dipper who traps the ghost in a silver mirror. Grateful, Pacifica hugs Dipper but not for too long as she realizes what she is doing and pays him to not talk about it. With her parents receiving the news, she bids Dipper farewell so he could finish off the ghost although she wanted him to stay for the party. Not long after, Dipper returns, being informed by the ghost that he only attacked for revenge because of the promise the Northwests broke 150 years ago. Pacifica begins feeling sad that Dipper is upset at her, although she knew but couldn't tell him because of her parents. Later, the ghost escapes and attacks everyone in the manor, turning them into wood. Pacifica, wanting to change the error of her ancestors' ways, does the only thing that will stop the ghost, all wing common folk into the party. With this done, the curse is lifted, the ghost moves on and everyone reverts to their original state. Later, Pacifica and Dipper enjoy each other's company and joyfully mess up the Northwests' rug with their muddy shoes.
It's possible she's the only girl Dipper still has feelings for by the end of the series. As he has learned to move on from Wendy, and only sees Candy as a friend now, he also hinted this in the real-life canon Journal 3.
AND PACIFICA IS NOT SO SPOILED BRATTY!!
Gallery (Mostly Pacifica and Dipper. Wait, it all is) Edit