When Bill had finally gotten out of bed the first thing he did was wash his hands; grateful that the demon had the decency to not use permanent marker, he did not want to be reminded of the deal he made. Then took a shower to get rid of the sleepiness that was threatening to take over. Slipping on one of his many yellow shirts and black pants and heading to the kitchen to prepare himself cereal. However as he was pouring his milk his cell phone rang, groaning he answered it.

"Yes, hello" He was half expecting it to be his parents checking up on him like they usually did.

"Bill!" A familiar voice called out.

"Oh, Pacifica? How are you?" He was not in the mood for talking right now, but hearing his brother's girlfriend's urgent voice call out for him made him think twice.

"I'm fine, I'm fine, but I called you because Dipper, he's…" She paused and his heart sank, did Mabel not keep her end of the deal?

"Oh god, please don't tell me he's dea-"

"No! No! It's a miracle he's woken up!" The sinking feeling did not leave him, but he knew that if he didn't react then Pacifica would know something was up. "That's... that's wonderful! Umm can I speak to him now please?"

"I'm sorry Bill but the doctors kicked me out right after he woke up, they told me they need to run some tests before he can take visitors again."

He cursed under his breath, but a part of him was glad that he didn't need to explain everything right away. Did he even want to tell Dipper? Mabel said she wanted a toy and he had already decided he was going to be the one to volunteer. Anyways how was he supposed to tell his brother that he made a deal with the same demon that almost tried to kill them and threatened to take over the world?

"The hospital had already called your parents, they're heading here right now and I'm contacting your uncles next after I'm done talking to you. I'll be sure to keep you informed if anything changes in my end"

"Thank you Pacifica." He heard a small sniff through the phone before a laugh erupted from her. "Pacifica… are you okay?"

"I-I'm just so happy he pulled through Bill… so very happy." he could practically see the tears running down Pacifica's face. "But the moment I see him again I'm going to shake him down for making me worry sick!" Bill smiled. 'Good old Pacifica, Dipper does know how to pick 'em'

"Heh don't break him too much Pacifica, leave a bit for us too, I got a heap of bones to pick with him for making me worry too!" He laughed.

"Will do William." She giggled making him roll his eyes.

"Bill." He corrected before he hanging up and sighing. So she did keep her end of the deal, it was only a matter of time before she showe-

A bone-chilling laugh echoed through the small apartment making him freeze.

He looked around for the source of the sound, he couldn't pinpoint it since it was coming from all directions. An explosion of glitter soon followed making him shield his eyes to prevent any of it getting into them. "Mabel." He coughs finally looking at the person floating in the middle of the room.

"In the flesh, literally, this is my fleshbag form." She spun around. "I can't believe you fleshbags find this attractive. I'm so squishy and soft, you fleshbags have weird tastes." She poked her cheeks.

This form she had taken was he believed the same high as him, (he couldn't tell since she was currently floating above him). Mabel wore the same outfit she had during his dream, a black waist skirt, pink blouse and bow tie, thigh high socks that showed off her long legs, shiny platform heels. A black top hat rested on her head, and a long black tailcoat with a pink interior hugged her curvy body. Her long hair oddly enough resembled the same shade as her brothers except for the ends which were dyed pink. The most noticeable detail he found was the yellow star-shaped eyepatch she had on where her right eye should be, her other visible eye shined with so much mischief only a chaos god could possess making it hard to focus on its rose color.

He was ashamed to admit she actually looked pretty cute if not beautiful, she filled in all the slots of being his type. Unfortunately for her, being a psychotic sadistic demon hell-bent on trying to take over the world was not on the list.

"Man, even after twelve years of taking this form it's still so weird." Mabel said as she started circling around him like a shark waiting to consume its prey.

This coming from the chaos master herself-, wait twelve years?!

Bill's eyes widened as he watched her pass by him for the fifth time. "You weren't recently freed?!"

"Haha nope!" She giggled behind her hand, drinking in his reaction.

"You've been here this whole time… watching us." He murmured to himself.

"Yup, and you guys didn't suspect a thing - funny how you all let your guard down right after you thought you defeated me. It was easy for me to move around unnoticed."

Anger filled his entire being. Could she have caused his brother's accident just to get him to do a deal with her?

Reading his mind Mabel shook her head. "You Pines were the ones that destroyed my trillion year plan to finally make a perfect world, so I can see why you would suspect it was me, but my hands are clean. It was coincidence that your idiot brother slipped and fell on some rocks - it had nothing to do with me…sadly." Mabel pouted.

He glared at her and clutched his fist.

Mabel crossed her arms and raised a single brow "What? Don't believe me? Look if I really wanted to end Pine Tree I would have done it already. Yes, I want my payback, but I have something else in mind instead of killing you or him. How do you think your family would react to knowing that you are at the mercy of a dangerous demon?" She smirked.

'Oh no'

"Oh yes! I kept my end of the deal, now it's time for yours. What do you say my little toy~" She sang moving closer to him, but he stood his ground.

"We defeated you Mabel and we'll do it again! Don't forget that!" He barked back feeling a little bit of confidence rising through him, it quickly diminished as he heard her laugh.

"Oh ho ho, little Corn Chip actually seemed to have grown some, there's the spunk that I like! But let's get something clear here kid..."

Bill yelped as he was lifted off the ground and into Mabel's eye level; noticing the deep glow of pink emitting in it. "If I really wanted to, I would have you buried six feet under, all it would take is a snap of a finger. You're alive right now for my entertainment! Do. Not. Forget!" The demon exclaimed.

The blonde twin let out a cry as his back slammed into his apartment wall.

"Hmm you don't seem very accepting of your role as my toy - tell me did you not want to be the toy? Sorry Corn Chip but a deal's a deal."

Bill groaned and lifted his head and continued to glare at her, she in return narrowed her eye at him as if daring for him to open his mouth.

"You're MY toy and it's going to stay like that until I say so! Unless you want me to bring my old puppet out of retirement, surely your brother Pine Tree would make a nice replacement." She opened her palm to show a picture of his brother.

Bill's blood instantly ran cold. 'No! we just got him back' "N-no not him. I'll... I'll be your toy just don't harm him." Bill could not have signed his own death warrant faster than that.

Mabel grinned seeing she had him there. 'Pine Tree being my trump card was the best idea ever!'

She put her hand on her ear and leaned forward. "Hmm, what was that Corn Chip, I didn't hear you?"

She floated down in front of him and held his chin upward. "Can you run that over to me again?" She was having way too much fun with this and he knew it.

"I'll be your toy" Bill said through his gritted teeth.

She flashed her full array of sharp teeth and felt Mabel's fingers release their hold on his chin, but her eye held his a few seconds longer.

"That's what I thought so. Also don't worry about Pine Tree, just as long as you play with me, I won't have any reason to go after him (not yet anyways). But know this Corn Chip, from this day on you now exist for my own entertainment, I own you. Whatever I say you will do, whenever I want to play a game you will play. You have no choice in the matter, if not I'm replacing you with Pine Tree." She threatened.

"Are we clear on this?" She asked, demanding an answer.

He knew that it was hopeless, whether he liked it or not he had already sold his being to this demon and he knew there was no way around it. "Crystal" Bill finally spat out.

"Terrific!" Mabel clasped both hands together "Now let's play a game shall we?"

"You're insane" She took no offense to it like he wished she would and instead laughed.

"Sure I am, what's your point?"

Mabel's human form is inspired by a picture I came upon as I was googling demon!mabel.

I have it posted on my profile go check it out.