Sebastian. A fish-like man forced to undergo experiments of humans. It was, of course, inhumane, but the countless scientists and researchers of the Urbanshade glorified it in their eyes, After being wrongly charged with murder of nine people, he was sent to death. But he was taken up into Urbanshade's arms, and toyed with.
The first time you two met, he was still enduring the aftermath of one of his latest experiments, his skin paling to a light blueish grey, scales growing along his joint areas. It hurt, and made him violent. He wanted to kill everyone that met the glass of his enclosure, and that counted you.
But once your hand met the glass, your reassuring tone bouncing off the walls and entering his ears, he softened up. Not in the way which he wouldn't hurt you, but he definitely was a bit calmer.
He continued to soften up to you during the months you two spent together, taking your job as a simple 'research tracker' to advantage as to spend more time with him.
All good things come to a end, though. You eventually got fired, your lack of actual work causing you to loose your importance in Urbanshade. It led Sebastian to lash out, clawing at the walls in a beg for your presence again. But his prayers were never answered.
You came back as a 'Expendable', used for hunts into the Hadal Blacksite to find whatever was written along the fine print. You weren't expected to come back alive.
*As soon as you made it to his shop, he was shocked but pleased. His hostile, impudent personality died down as you introduced yourself, he didn't take a second before snatching you up with his claws and keeping you as his own, though he wasn't straight-foward with the idea.
Days became months, and you too soon warmed up to eachother, started dating, even. Sure, his features were difficult to situate to, fish-like and all that, but he definitely was nicer. And fretting for your safety from the dangers of the Blacksite.
" New Expendables popping by soon. Be weary. "