He had it for the first time, a unique and special human with an equally special soul. One that he could use test and discover new things about the human world above them all. The possibilities were amazingly boundless, and could serve to unlock some key elements of the Surface that monsters had been missing for quite some time. Additionally, this could serve, should all else fail, as their ticket out of the Underground for good.
There was so much that he needed to do, so many experiments he needed to perform on this rare and perfect human, but that would come at a later time. He would be patient, all would come in due time. For now, he needed to contain the human appropriately, as it was currently shrieking and tearing at the fabric walls with fervor and an animalistic craziness.
It appeared to be very upset, to say the absolute bare minimum, as it was attempting to scale what little it could in an escape from the confines of the windowless, fabric coated room. Much of the fabric had been torn down, ripped into long shreds and tossed about in a frenzy, and he noted he would have to replace them later. It was almost comical really, the utter futility of the human’s actions, but still they persisted like no tomorrow.
Dr. W.D. Gaster watched calmly as the human tried for what had to be the fifteenth time to scale the wall, howling incessantly, even though it's voice sounded like it would give out. Nevertheless, he was intrigued by the human's behavior and its drive to continue tearing futilely at the walls. He steepled his fingers underneath his chin while he kept an eye socket on the monitors.
Surely the energy it possessed would run out at some point, and certainly it would have to give up. After all, the human's soul trait was not determination, from what little of it he had seen. Unfortunately, he had only witnessed a small glimmer of the soul, very briefly, on his camera monitors that showed him the Underground, but even that tiny glimpse had given him a drive to see this soul.
It was unlike any other soul he had seen before, so he knew not what to make of this sudden and new development. That was purely why he had taken an interest in this human once it had fallen, to know what was different about their soul, and his fascination about the possibilities was boundless.
It had only taken that one glimpse for him to recognize something unique about this human, and now he gazed on them as it was scrambling around frantically. Their soul hadn’t appeared, according to the Royal Guardsmen who had handed it over to him, even when they went to try and fight it. It was another reason to add to why this human was special. The human was capable of resisting their soul being seen, something that Gaster had never encountered with anyone except perhaps monsters.
Now, as he watched, the human began to tire, just as he had predicted, finally falling down onto the ground amidst the shredded fabric and began to weep bitterly, their body curling in on itself until it was as tight as could be managed. Gaster took this moment to really look at the human, or what he could see of them.
It appeared to be female and of a small stature, no taller than his chin really, as well as possessing very short, almost shaven in some places, choppy, brown hair that was mixed with dirt and mud. At least, it looked brown to him when he had first brought them into the lab. It was so muddied and dirty that he couldn't quite tell where the hair color started and the dirt ended.
Its clothing, or what little the human had, having entered the Underground nearly nude, was dirtier than their hair, ripped, torn, and bloodied with dried blood, an almost black color at this point. Its body was coated with scars, starting from just below their neck, down to just short of their wrists, and all the way down to their ankles. Scars from burns, cuts, scrapes, and more, filled more than 70% of its skin he estimated, almost in a bizzare tattoo form.
Bruises also patterned over the scars, and covered places that scars were not on, such as the human’s face and neck. They were odd colors as well, with the classic black and blue, but also greens and yellows. It was fascinating, but also something slightly disturbing to be a witness to. Humanity was an odd thing, nothing much had changed since the war that sent all monsters into the Underground in the first place.
He observed patiently as the human's breathing phased into quieter, less labored breaths, and he presumed it had fallen asleep in the time he had been looking at them. Time to move them to a different cell, he supposed. It couldn't stay in a torn and mangled room forever, and, judging by the looks of the room as it was, it would only make the current room worse.
The two of them had only been here for a few hours and yet- wait hours? Gaster took another look at the clock on his phone to see that it had been roughly three and three quarters of an hour since confining the human in this way. The human had persisted for so long in its endeavors to be free that it managed to expend all its energy in three hours.
Gaster carefully rose from his chair, stretching his bones in a way that attempted to make them relax a little more. He hadn't realized how stiff he was from sitting for almost four hours straight. With ease, he strolled to the elevator, pressing the button to go down to the correct level, then stepped out into the hall, down to where the human was currently. Once he reached the containment unit, Gaster carefully opened the door with his hand, the scanner blazing light through the hole in his palm. The door slid open silently and smoothly, just as he designed, revealing the room the human was in.
It somehow looked worse in reality than it had on the cameras. Not only was the fabric torn and pulled away from the walls, but there were bloodstains and dirt caking nearly half of everything. The blood was fresh too, that was worrisome. The human hadn't been injured when he had brought them here; had it been self inflicted injury? Perhaps a reopening of the freshest wounds it had on its body?
It would be a subject to study later on, but for now he had to get the human out of this room and into a less... destructible environment. Hopefully there would be less frenzy and chaos when it realized that their new environment would not yield as easily to their escape attempts as the first one had. Alas, hindsight was twenty-twenty, and he would have to make sure that he kept it in mind should there be another experiment like this one.
Gaster summoned his magic, sending a small armada of hands to lift the human to the next room, noting that though he still had to put minimal effort into the magic used in carrying them, it was still a good portion heavier than any skeleton's body would be. It made sense, as humans carried around all of their organs and parts physically with little to no magic to help them cart around their bodies.
Skeletons, and most other monsters facing a similar body type to the skeletons, would be much lighter anyways, simply because they lacked what the humans had in a physical form, but he already knew that. It was still nothing to him for his magic to carry, and caused him no strain at all, but perhaps he would write that down in his notes somewhere if he remembered later. He knew that there would need to be a session later in which he studied the human’s body to appropriately document the anatomy and figure out how they worked.
After a few minutes of checking down the hall for an appropriate place, Gaster had reached a more suitable room, this one lined with metal panelling on the walls and only a few destructible items, such as a small bathroom area and a bed, he laid the human carefully on the floor. This room had an electro-magic barrier as a door, which could be more convenient as humans could not physically make it past this door or damage it, but this kind of door provided its own quirks.
The human, if it was as stupid as he thought it was, would try to flee and become injured in the process, thus hindering his studies. Such was the nature of the door, that it would repel anything that was not meant to come through it. Humans were a prime example of this, and he knew that the electro-magic would provide quite a shock if touched.
It would prove to be difficult to keep the human contained, as he wanted to make sure this one survived long enough to experiment on. But with the door also came the possibility of a failure of the magic, though that was hardly a thing to be concerned about with his design. For now, however, he could safely observe the human from this room, and the testing rooms were not too far.
He had to satiate the itching in his skull, to know what made this human and their soul so different from all the others. It was almost as if the soul called to him, with him only seeing a small glimmer of it before he had been able to rush out and try to capture it. He had to know why. Time would be available to him, and he could solve all of his problems, including that pesky itch for knowledge, with the appropriate amount of time and patience.
The buzzing of his phone interrupted his thoughts, and he fished it out of his pockets impatiently, grumbling at the disturbance with distaste. Most of his associates knew that if he was working, he was not to be interrupted for any reason other than absolute emergencies, and even then they had to find a better reason. His work was delicate on a good day, and volatile on a bad one, and this was not one of the good days.
Surely one of them wouldn't be calling him at this hour anyways, most of the lab assistants had gone home for the night, and he also had requested that he be undisturbed specifically for the reason that the human was finally here. However, the name on the phone screen made whatever irritation he had mustered from the interruption falter and fade out.
Gaster had almost forgotten his two sons would be waiting for him at home, eager to hear the news of the day, especially since he had rushed out rather hastily to see where the captured human was being kept and given no further explanation. The two were fascinated by humans, despite never having seen one in the flesh, and both had hoped to eventually see a human in person, perhaps at Gaster's workplace, some time soon.
Gaster knew that he could never let them see any ordinary human at his work, they were too quickly torn to bits for their souls to become a part of King Asgore's collection to break the barrier. But with this new soul, this new human, he might have the chance to grant his sons' wishes. The thought almost made him smile, to potentially have one of his sons come and follow him into his research. They were both smart enough for it, certainly.
Gaster hurriedly answered the phone before it stopped ringing, bringing the device to the side of his skull as he reactivated the electro-magic door and turned away from the human. Papyrus' voice came through clearly, despite the fact that he was in the lab and should have been out of cellular reach.
" Dad ? Where are you? Dinner was supposed to be two hours ago and you still haven't come back, Sans and I are worried and-" There was a slight pause on the end, and he could hear Sans' voice, though muffled and unclear to Gaster, saying something to Papyrus briefly. His younger son huffed at the quip from Sans, then turned back to the conversation at hand.
"Well, I was worried!! Anyways, are you going to come back yet? I want to make sure you eat something and I want to hear all about why you had to leave so suddenly because of a human being captured!"
Gaster couldn't help but chuckle a little at his younger son's words, the thought of returning home sending a soft swell of happiness through his soul. Papyrus was the more excitable and energetic of the two sons, and despite being a bit tall for a skeleton, quite a bit taller than Gaster himself actually, he still acted very much as though he were still in his babybone years. He sighed softly and ran his bony fingers over his eye sockets carefully, tracing the cracks as though they were still as fresh and delicate as the day he received them.
"I am sorry to have worried you Papyrus, I will be home soon," he said smoothly, hoping to ease his son's worried mind. "I should be home within the hour, and I will tell you what I can about the human, but there are no promises, understood? I am very tired and ready to eat, then sleep, so you might not hear much from me tonight." There was a slight hesitation on the other end of the phone, then a sigh.
"Okay dad, just get here safely okay? I don't want you to have any trouble getting home this time." Gaster hesitated at those words, his fingers stopping over the crack under his left eye. He remembered that these two cracks had occurred just as he was leaving to go home one night after work, which had scared both Papyrus and Sans when he walked in the door.
It was no wonder then that Papyrus would be worried that his father returning home late could pose another issue like the one before. A small smile tugged at the corners of Gaster's mouth, knowing his son cared. He let out a small sigh, straightening his spine just a touch more than it had been before he answered.
"I promise I won't, Papyrus. I'll see you soon."
Gaster hung up the phone with a sharp click, and slid the device back into his pocket, rubbing the side of his skull with his free hand as his eyes gazed at the human before him. If everything he had hoped would happen as smoothly as he planned, then he should be able to complete all his usual work, experiment on the human, and still have time to see his sons at the end of each day. Not to mention he still had a few days off that he hadn't used yet, though he doubted that he would want to stay too far away from the human now that he had them.
The human had eluded capture for almost two and a half days, almost as long as the last one had before them, and once he had heard that the human had been caught, he quickly interceded with the members of the Royal Guard just to make sure that it would be put into his care instead of being brought to the captain.
All the effort would be worth it, so he hoped. With a final glance back at the human, still curled up tightly on the floor, he turned his back on it and marched out of his lab, ready to head home and see his sons, though a part of his mind still lingered on that tiny dirty creature in the cold metal cell.