Trust No One...But You...? (DipperXReaderXBipper)

Happenings

You love Gravity falls.

You live it.

You cosplay it, you read about it, you theorize about it, your walls are plastered in prints and fanart. You love the show as a whole, but your real obsession is Bipper, as well as Dipper, though Bipper holds a special place in your heart. For as long as you've followed the fandom, you've wanted more episodes featuring the demon-possessed character, but at the same time you felt bad for the boy whose body had been stolen.

The day starts normal for you, the average Saturday. You climb out of bed (If you have a bunk bed, you jump from the ladder about three rungs from the bottom) and hurry to your desk. You're trying to draw Dipper Pines during his transformation into Bipper, and you've been working on it for weeks. Suddenly, something catches your eye. It's outside the window. There's something shiny laying on the ground outside. Distracted from your task, you must investigate.

/(*Timeskip, brought to you by laziness*)\

You're outside now, and you pick up the shiny object. It's a book. A red book with a gold, six-fingered hand on the cover. The hand has a black number one on it. Your breath catches. Your legs begin to shake. You brush it off and look up from it-- You're no longer home. You look down to your feet and see the all-too-familiar Bill Cipher pentagram. You scramble to get away from it, nearly tripping over yourself. You're in a forest of tall, thick pines. 

You spin to look behind you as you hear something move. A couple of feet away is a boy in a vest, wearing a tan backpack and a blue and white hat with a pine tree on the front. Dipper! He spins to look at you, as if you'd called out his name, you must've. you bring the book to cover your mouth shyly. He's holding an almost identical book in his hands, open, as he'd just been reading it. He walks towards you with a partially blank expression, his eyes glinting with curiosity, as well as maybe a little hesitation, perhaps even fear. His head tilts slightly to the side as he approaches. Once he is close enough to reach out and touch you, he inspects your features. You become nervous, filled with butterflies. You realize now, not understanding how this had slipped past you when it occurred, that you're wearing an eyepatch over your left eye. You look down at yourself and find that you're wearing a yellow tailcoat. Your hair has yellow streaks through it.

"Do I... know you...?" Dipper asks. Your head whips up to look at him. You back away from him. You can't be Bill Cipher, you're a girl! But you came in through the pentagram, what else could...?

An almost metallic laugh fills the air. Dipper's expression grows instantly terrified before dropping into one of pure hatred. He whirls around to find himself face-to-eye with the floating Dorito himself. 

"Bill," He growls.

"He-hey, Pinetree! D'you miss me? I sure missed you!" Bill gestures to the two of you with his cane before grabbing Dipper by the shoulders. A thick mist surrounds Bill. Dipper pulls himself away as blue flames erupt from the ground. The mist fades away and the flames lower enough to allow the two of you to see Bill--a person.

He looks down at himself briefly before hurling himself at Dipper, pinning him to the ground. He grabs his hand, which erupt into the same blue flames. You freeze. Dipper cries out, and you look away. Dipper falls silent. You turn back around to see Bill gone and Dipper standing. His head is down and his eyes are closed. You step cautiously towards him. His head moves up slowly to face you. His eyes flash open.