The human race is a great object of entertainment; something that Bill Cipher discovered soon after his banishment from the Mindscape. The demon loved that he could play with a human's mind and emotions to his advantage and be the cause of that human's downfall. Bill Cipher helped to create empires, and he destroyed them when it got too boring; he formed great leaders and destroyed them; he even causes wars, just for the fun of it. Bill Cipher is the embodiment of chaos, and quite literally too; chaos is in his domain of power, as well as many other things.
Currently, Bill is happily watching the human race destroy itself. Technology was his greatest secret to indulge yet and now it's causing a whole slew of problems; problems that can't be solved all because of Bill Cipher.
The demon was sitting in a college campus's library, stuck in a human form that he would very much get rid of, but that sort of change isn't in his ability as of yet. The sun-kissed demon in human form snarled under his breath, cursing his banishment in all sorts of languages. If his demonic "family" wasn't so intimidated by his great power, he would still be in the Mindscape enjoying the downfall of the human minds as he manipulated their dreams instead of being stuck in the human realm and losing power the longer he stayed away from home. But no, even his "twin brother" William Cipher had a hand in his banishment, and Bill would have his revenge.
He just needed the right opportunity to execute his plans.
He can't afford to make another mistake like the Sixer incident.
The demon sighed and watched as the human college students scrambled about in the library. It was exam week, Bill's favorite week of any year, and the library was stuck in the chaotic scramble of feeble-minded humans fumbling around to attain and memorize every scrap of information so they could get an acceptable number on the piece of paper that causes them so much stress. Bill couldn't understand the concept of "grades," but he managed in his "college education" as he took on the guise of a fellow student. Again. Bill's power may be weakening but he's made enough deals to keep himself at an acceptable power level, and existing. With a wave of his hand, he can alter the memory of everything that interacted with him so it was as if he never existed in the first place. This was his hundredth time in the college setting, getting a degree he has no need for but it was the only thing consuming his attention at the moment.
Bill had to say that he never seen such a small college, but it's not surprising since Gravity Falls is such a small town in the middle of nowhere in Oregon. The library was small, like the amount of students attending, and Bill was surprised that he managed to find a table and seat in a quiet spot to pretend to study something he already knew while study groups were panicking and arguing. Psychology was one of the few areas of study that Bill didn't get a degree on, but being a demon of the mind (as well as many other things, his domain of power is pretty large) this subject comes easily to him and attending the class is pretty a waste of his eternal time.
Bill's left amber eye stared down at his textbook while he was absentmindedly playing with his eyepatch that covered his right eye as he pretended to be focused on what the words on the page were telling him. In reality, he was dwelling in his thoughts. He was so deep in thought that he didn't catch the sound of someone's soft footsteps approaching his table.
"Excuse me," A timid male's voice announced the presences of another creature in Bill's vicinity.
Bill blinked and looked into the brown eyes of a 19-yeard-old male wearing a red shirt with a light blue hoodie, gray shorts, white socks with dull gray shoes, and a blue and white cap with a pine tree symbol on top of his unruly brown hair.
He didn't respond, but the human was only looking for the demon's attention.
"Can I seat here?" The male asked, motioning to the empty chair across from Bill.
Bill smirked. "Sure thing, Pine Tree," He answered.
"What?"
"Your hat." Bill pointed to the empty space above his black hair that had a tuft of blonde.
"My name's Dipper, asshole," Dipper huffed as he took his seat and pulled his books out of his schoolbag.
"The name's Bill," Bill introduced himself as he only broadened his smirk. He may have exposed his sharper than normal canines, but the demon didn't care. He narrowed his eyes as Dipper glared at him and began studying. The demon let his powers envelope Dipper in an invisible, unfeeling embrace as Bill tried to get into Dipper's mind to invade the human's thoughts for some sort of entertainment. He prodded the humans mind only to get-
Nothing.
That's…weird. Bill had encountered some humans able to resist his power back in the old days, but that ability faded with time. Humans today have their minds out in the open and they are so easy to invade and destroy. The demon hummed as he tried again, but he got the same result. No thoughts were being projected, and the more the demon tried to find some sort of crack in the defense the less was being given. Bill could only get Dipper's emotion, and right now the human was annoyed.
"I'd appreciate it if you'd stop staring at me. It's making my skin crawl," Dipper chided in a monotone as he flipped the page of a textbook.
"Hmph," Bill huffed but he continued to stare, but pulled his power back (the fact that the human felt it intrigued him more). He hadn't made a deal in a while and it would do no good to waste his already too precious amount of power. "Whatcha studying there?" If his thoughts won't reveal anything, he'd have to do things the old-fashioned way: socialize with the human and read him that way.
"None of your business," Dipper answered.
"Come on, Pine Tree. You put yourself in my company, and I'm curious. Studying Psychology is so boring. Entertain me."
"Don't call me that! I came here because it's quiet and-wait, you're taking Psychology too?" Dipper raised a brown eyebrow at the demon. "I didn't peg you as the type of person interested in that stuff."
Bill smirked and rested his chin in his hand. "Looks can be deceiving Pine Tree~" Bill glanced down at the textbook in front of Dipper, "But that's not the Psychology textbook, kid. What are you studying?"
Dipper scoffed and he slammed his textbook shut in one quick movement, but the speed didn't stop Bill from getting a glimpse of a tattoo in gold ink under the hoodie sleeve. Bill stared at the cover of the textbook that Dipper was showing and he laughed.
"Demonology?" Bill snickered and Dipper scowled in response, his cheeks turning red.
"Shut up! You were hell-bent on knowing what I was studying!" Dipper snapped and he opened the textbook again and resumed studying.
"Do you believe that demons exist?" Bill asked, tilting his head a bit as he gazed at Dipper's face intently. The cat-slitted eye caught every laugh line, the dark circles under the human's eyes, the slght twitch of the corner of Dipper's mouth and he hesitated to give Bill an answer.
"Do you?" Dipper asked, meeting Bill's gaze.
I see what game you're playing at, kid. "I'll answer if you do." Bill put his hand out to Dipper. "Do we have a deal?"
"An answer for an answer?" Dipper sighed and shook Bill's hand. "Sure. You first."
Bill pulled his hand back and grinned. "I do believe they exist," He stated with a flamboyant wave of his hand and he pointed to Dipper. "You tell me, Pine Tree."
"Um…yeah, I do think they exist…I mean, who else would cause tragedies like the Black Plague and stuff?" Dipper confessed and Bill chuckled.
Ah good times, Bill reminisced as he leaned closer to catch a glimpse of the texts. "Is that what the book says?"
Dipper pulled the book closer to him, and hastily pulled the sleeve of his hoodie over his almost exposed tattoo. Bill narrowed his eyes at Dipper's concealed arm; he saw part of a one-eyed triangle symbol. "Not really, no. It's really general about what demons do…but it gives more information on the different types of demons and it's kinda cool."
"Different types?" Bill asked and he leaned back and his smile grew. "Like what? Enlighten me, Pine Tree."
Dipper leaned away and glanced at something before he closed the textbook and shoved it in his backpack. "Well…there's the berserker, succubus and incubus, and the most interesting one in the book in the dream demon." He stood up. "I gotta go. Bye Bill." He gave an awkward wave and left.
Bill watched the human leave the library and his amber eye began to glow an electric blue. His demonic powers couldn't sense any magic trail where Dipper was and he laughed as he gathered his things and left the library. His eye returned to its unnatural amber color and he snickered under his breath. "Pine Tree you're an interesting kid," Bill thought aloud as he strutted to his dorm room, "You've caught my attention."