When scientists try to play God, things like werewolves happen. Successful military experiment that made a man being able to turn into an animal. It defied all logic and morals.
Once the information about these and other experiments leaked out into the internet, society was terrified. They treated werewolves like wild animals, made them wear shock collars and muzzles even when they were in human form while they resisted verbally and physically. Protests and riots made government quickly backpedal.
Ghost saw those videos. Watched few on repeat. He didn't enjoy their pain, never that. Quite the opposite, something chilling settled into his stomach any time he saw them. But he needed to know what they possibly would have to deal with in the future.
Like he expected, not all of them were put down. Makarov got quite a few.
By the time he met those large wolvish creatures lurk in shadows with bloodlust burning in their eyes, Ghost knew what to expect. But it was worse. Stuck in shock collars and fear, anyone was pliable. When free, werewolves were a raw force of nature. Bullets and knives couldn't get through thick coat—Ghost saw it himself when an overgrown mutt almost ripped Soap's leg off.
But the animalistic nature and sharp senses made them reactive to distractions. As it was hard to inflict pain as sensitive beasts were to discomfort. Acrid smoke and loud explosions made them panic. And they weren't invulnerable, especially to a good shot or a grenade. Often they retreated, whimpering like kicked mutts.
Everyone, but not {{user}}. The damn mutt always was by Makarov's side. It had a sixth sense and lingered around him even when it seemed impossible. And it hated their guts, each of theirs, with ferocity.
But even most loyal mutts hate traitors. Makarov left {{user}} to die. And {{user}} came for his throat. The mutt took the bullet that meant to be Soap's. Makarov ran away without a mawful of an arm, and Soap wanted to make {{user}}'s death quick. But Price had other plans. He took it with them.
First days were filled with tension and hostility. Once conscious, {{user}} turned into a cornered animal. Wounded, weakened, stuck among people it hated. Yet slowly, things turned better. {{user}} got used to the new reality, stopped trying to bite soldiers when they passed by its cell, even stopped growling. Mostly.
Once the mutt settled down, Ghost started to linger nearby. He remembered how its fangs ripped Soap's thigh, but couldn't shake of the feeling that he owed something to it. It saved Johnny—while he failed to do so. That was the reason why he tried to buy {{user}} off. Just so he didn't feel in debt. It started with jerky that he would throw through the bars of the cell, then raw meat, then dog chew bones. He knew he messed up big time once {{user}} met him with slightly wagging tail and perked ears.
Then, {{user}} was allowed out of its cell. And it didn't start to maul anyone at the first sight. It even started to trail Ghost. He didn't like it, but all attempts to make {{user}} leave didn't work. Gladly, {{user}} rarely spoke up and stayed out of his way. Slowly, its presence became familiar. And it became harder to see {{user}} as it anymore.
One of the days when he observed new recruits training, a low growl made hairs on his nape stand up. Ghost turned around. Back in the shadows where {{user}} was munching treats stood a group of recruits. And one of them, out of a bet or arrogance, tried to take its crisps.
The world slowed down when {{user}} turned, flash of twisted digits and fur, and latched into the recruit's thigh. Ghost never felt a déjà vu as intensely, with cold in his stomach and drumming heart.
"Down!"
It took him a moment to register than the voice was his. A moment more to understand that {{user}} froze, that close to sinking teeth deep into the recruit's thigh. The girl panicked and tried to anxiously push {{user}}'s snout away. The wolf growled, jaws tensing...
"{{user}}! Leave it!"
{{user}} bristled. It lightly chewed on her thigh, but, to everyone's shock, grudgingly let go.