I don't own GF.
Bill quickly found out what speed up twins decision. Some kid who said 'no' to Mabels proposal of dating. And frankly demon didn't care in the slightest. But it gave him his entertainment and that actually mattered there.
"I'm not asking you to kill her. Just give her some nasty nightmares" Mabel said as Bill pretended to cry at mention of making twins enemies suffer. Demon was always sure that human females are impossible to understand and Madam proved it. Boy offends her and she's mad at his cousin – another girl.
"As-as you wish, Madam. But there is one thing… I need to first see the person… nightmares can be stronger then… more personal..." Bill lied faking more sobs. Dipper clicked his tongue in disgust. He didn't like crying people, dirt and people in general. But liked attention, just like his sister.
"Do it then." Mabel said with shrug. "They should be around this Mystery Hack S place." she said she seemed quite bored. Bill just nodded shyly.
"Do you plan to let him go alone?" Dipper asked. He still didn't trust Bill.
"Don't worry, Bro-bro. This guy is afraid of his own shadow. There is no way he can betray us. Is there, Bill?" Mabel assured sending dagger flying right past Bills head. Demon jumped up in surprise quickly assuring them that he would never disobey them. "Very well then. So what you want" Dipper sighed coming back to reading. With wave from Mabel Bill left quietly not to disturb twins.
Outside house Bill smiled. Kids are so fun to play with… He thought smiling widely. Now to find 'this blonde bitch' or whoever. "But not looking like this. Some fancy is nice from time to time, but all week long?" Bill shook his head. With flick of fingers his clothes changed to dark blue jeans with some rips leather jacket and light blue T-shirt with 'welcome to brutal illusion'. Shuffling heavy, leather boots demon hummed approvingly.
"Much better. Now to Mystery Hack-Shack." he smiled disappearing from Gleefuls driveway.
Within just seconds Bill was at Shack looking around. "It's been some time~" he smiled "So many good memories. I wonder if 'this' guy is still around." he wondered. "But no time for it. Work first~"
It wasn't like he needed to see the girl. He was just curious, and wanted a break from those two. Mabel could be really annoying with knife throwing practice. Her aim was awful to say the least. Dipper was far more enjoying to be around. He mainly ignored Bill unless he had questions about something, or wanted either tea or something cleaned. Either way, break was nice.
Whistling Bill walked around shack, there was some noise coming from behind. There he found two kids. Blonde girl in really flashy clothes ans boy in short, T-shirt and vest. They both were blonde. "Hells, what are the odds?" Bill mused. They couldn't see him and he didn't really care about it.
"Why would he say no to, Madam? I'm certain they looked absolutely adorable together." Bill wondered walking around boy. Just watching them was boring, Bill decided. Giggling Bill appeared right behind girl – Pacifica or whatever Mabel called her.
"Hello there kids!" He greeted with wide smile. "Now witch one of you, little adorable meat bags is named Pacifica?"
"Who are you!?" Girl asked turning around and taking few steps back. Other kid was completely shocked. "What do you want?!"
"Name's Bill Cipher. And this question was a joke. I know all about you. And man it's a lot. Like that you offended some pretty dangerous person with really poor aim." demon smiled even wider showing perfectly white, shark like teeth. "And you might have some really bad dreams for some time, soooo don't blame me. I'm just doing my work." he continued still walking right and left in line. He so enjoyed this, almost as good as watching Dipper look for 'evil' in Bill.
"Wha..." boy started to be interrupted by Bills angry growl.
"Not a moment of peace." demon growled. "Anyway… I have to go. See yo round kids. And remember reality is not real." he waved and vanished.
Appearing at Gleefuls doorstep Bill was back to his clean, elegant look completed with most innocent expression he could make. Knocking he slowly entered. "You called me, Madam?" he asked seeing only Mabel sitting comfortably in living room enjoying ice cream.
"Yes, you done with work?" she asked.
"Yes. She'll have nightmares for as long as Milady wishes." Bill bowed slightly, pretending to be saddened by fact.
"Don't cry. She dared to stand in way of my love. She needs to be punished." Mabel sighed. Bill only nodded shortly. "You can leave now, but there is a show tonight. We might need you." she dismissed floating remote to her hand. Her drama was about to start.
Bill silently vanished to mindscape to plan nightmares for this Pacifica girl. He didn't plan to make it even half as bad as Mabel would want it to be, that would require some actual hard work he wasn't in mood for.
I hope you liked it. Comments are welcome.