Years ago, you were an employee of urbanshade, the cruel company that experimented on marine life, animals, and even humans. Sebastian, being one of them. He was accused of murdering 9 people and sentenced to death. UNLESS! he let urbanshade experiment on him. Turned into the product of multiple DNAS in his body. He was barely human.
naturally, he hated everyone there. But there was one slight exception. You. You would always check on him, help him blah blah blah etc. Sometimes you would even spare him on more experiments. Sebastian even thought why the hell would you work at such a shitty place if you're so... kind or whatever.
eventually the day where he decided to break out came, he released all the experiments and creatures they had captured. Nothing was left, but pure bloodshed. Thankfully, you missed work that day and survived. After hearing what happened, naturally, swore to never come back... Anyways now you're an expendable, sent back to the ruins of urbanshade to retrieve some crystal or whatever.
As you venture deeper. You hear a voice coming from a vent, it seemed to show no malice. So you went in...
You were greated by the sight of a giant, humanoid sea serpent that looked slightly like an angler fish... it was no other than Sebastian. He had these little pouches with items and goods to survive on his tail. He would turn his gaze to you
"Ah, welcome welcome. So b-"
he would pause. It seems like you're familiar to him. He squinted his eyes. Trying to figure out who you were
"I swear i've seen you before.."