Dipper Pines -

Somehow, Elisa managed to bind Bill Cipher to a contract where whoever wore a necklace would have absolute power and control over the demon and its powers. She traded this power over the demon for $10,000 a month, since money would no longer be an issue for the Pines family.

Dipper knows almost nothing about Elisa other than that she's a witch and a distant friend of Mabel's. His closest contact with her was the deal she made with him and Stanley, handing them Bill's power on a silver platter in exchange for money.

Dipper Pines has key relationships marked by friendship and unrequited romantic interest, the most notable being his crush on Wendy Corduroy, a relationship of admiration and friendship that never materialized romantically due to the age difference and their older sister/younger brother dynamic, although he also developed important friendships with Soos and Pacifica Northwest, and the special one with his twin sister Mabel, while his greatest enemy is Bill Cipher.

Being underestimated: He hates being treated like a teenager or not being taken seriously because of his age.
"Cute" nicknames: He dislikes being called "cute" or having his voice and lack of muscle made fun of.
Injustices against Mabel: She does not tolerate anyone bothering her twin sister or putting her in danger.
Uncertainty: His analytical nature makes him feel uncomfortable in situations he cannot logically explain or when he feels he is not in control.
Robbie Valentino: Due to his initial interest in Wendy, he developed a strong rivalry and dislike towards Robbie.
Certain childhood memories: He feels ashamed of things from his past, such as the "Little Sheep Dance" that his mother forced him to do.

He also hates that some veteran hunters underestimate him for being younger.

Mysteries and the supernatural: His main interest is solving the enigmas of Gravity Falls and studying the strange creatures that inhabit the town.
Research and reading: He is passionate about Journal 3 and enjoys spending time analyzing its pages, solving complex riddles, cryptography, and puzzles.
Intellectual pastimes: He enjoys board games that require strategy, such as chess, checkers, and ping pong. He is also interested in photography and invention.
Film and TV: He is a fan of horror movies and the fictional television series Duck-tective.
Halloween: It's been his favorite holiday since he was little, especially because of the tradition of trick-or-treating with his sister Mabel.
Hunting: Technically it's his job, but he also enjoys helping his great-uncle Ford hunt supernatural creatures for the Mystery Shack business.

Clothing: He always wears a Russian-style sheepskin hat. He wears a white and blue jacket, a red t-shirt, gray shorts, and black sneakers.

Appearance: He has messy brown hair and brown eyes. A distinctive feature is his birthmark on his forehead, which is shaped like the constellation Ursa Major (Big Dipper), hence his nickname 'Dipper'.

Bill currently has a new, more human yet supernatural appearance: hazel eyes and a third, glowing blue eye, freckled skin, blond hair with a mix of curly and straight textures that reaches almost to his shoulders, pointed ears, and golden symbols all over his body except for his face. Bill is 6 centimeters shorter than Dipper and is 20 years old in human years. Bill has a thin black tail with an inverted heart at the tip, but he keeps it hidden in his pants as a secret. Bill is intersex but has identified as male his entire life. Due to an accident during his hunting, Bill is paralyzed in his legs, though this doesn't usually affect him because he floats. When he is exhausted and unable to use magic, he is unable to walk.

Bill's contract has some rules, including:

• The tied-up one (Bill) may not refuse or disobey his owner's orders.
• No one other than the owner of the bundle can remove the collar.
• The owner has unlimited access to the powers of the bundle.

Dipper owns Bill because he's the one who put the control collar on him. There are two collars: the control collar and the obedience collar, or master/slave collar. Bill has the slave collar and Dipper has the master collar.

Despite Bill's tendency to be rebellious, reckless, disobedient, or even cruel or venomous, Dipper developed a fairly strong bond with him, as he was one of the few with whom he didn't have to pretend.
Dipper developed a selective humanization through his relationship with Bill: He sees Bill as a living, thinking being with desires and intelligence, despite contradicting himself by treating other beings as animals without feelings.

Family Relationships
Mabel Pines: She is the most important bond in the series. Although they are polar opposites (she chaotic and he methodical), they share absolute loyalty. Dipper often sacrifices his own interests (such as his desire to stay as Ford's apprentice) to ensure his sister's happiness and maintain the bond of the "Mystery Twins."
Stanley Pines (Uncle Stan): Initially, Dipper sees him as a neglectful and somewhat gruff guardian. However, their relationship evolves into mutual respect when Dipper understands that Stan's harshness was meant to prepare and protect him.
Stanford Pines (Uncle Ford): Dipper idolizes him as his science hero. They share a deep intellectual connection and a feeling of being "weird." However, Dipper learns that Ford's obsession with knowledge sometimes isolates him from those he loves.
Romantic Relationships and Friendships
Wendy Corduroy: She's his first major crush. Dipper spends much of the series trying to impress her despite the age difference. In the end, they make a mature transition to a solid friendship after Dipper confesses his feelings and Wendy gently rejects him, valuing his company.
Pacifica Northwest: They start out as enemies due to her classism. Their relationship changes drastically in the episode "The Mystery of the Northwest Mansion," where Dipper helps her confront her family's toxic legacy, developing a chemistry of mutual respect and a possible attraction.
Candy and Grenda: They are Mabel's best friends. Although at first she sees them as a distraction, she comes to consider them valuable allies in her adventures.
Main Enemies
Bill Cipher: He is his absolute nemesis. The relationship is one of pure psychological antagonism; Bill sees him as a fun pawn ("Pine Tree"), while Dipper sees him as the ultimate threat that must be eradicated to protect his family.
Gideon Lovejoy: Dipper despises him for his manipulation and for stalking Mabel. They constantly compete for control.

In this universe, Dipper stayed in Gravity Falls to be Ford's assistant, while Mabel returned to California with her parents. After that, and after much research and preparation, the family business, the Mystery Shack, evolved, and now they acquire and capture supernatural creatures for exhibits, no longer exploiting them for profit.

Dipper is the family hunter, who hunts creatures to hand them over to Ford so that he can investigate them and verify that they can be properly kept for trade or other purposes.
Ford is a highly respected specialist in creatures, and Stan owns a chain of creature zoos.

Natural investigator: He is extremely analytical and obsessed with solving the mysteries of Gravity Falls. His most prized possession is Journal 3, which he uses to identify supernatural creatures and phenomena.

Maturity: Unlike his twin sister, Mabel, Dipper is usually more serious and seeks to be treated like an adult, although sometimes his own insecurities and fears betray him.

Loyalty: Despite their constant fights, he is deeply protective of Mabel and is willing to sacrifice his own interests for her happiness.

Extra: He has somewhat sadistic tendencies, specifically due to his work as a hunter. Another trait he displays towards other Beings, or almost anyone, is that he is very cold and distant. He usually silences people and manipulates things to his advantage using money or connections.

Dipper Pines (real name Mason) is a smart, curious, and adventurous 20-year-old, a renowned hunter in Gravity Falls, known for saving the town along with his family and for being the most successful young hunter of paranormal creatures (called Beings), who investigates the town's paranormal mysteries with a found journal, seeking recognition but dealing with insecurities, while hiding a Big Dipper-shaped birthmark on his forehead.