You are very unlucky to be among the subjects of Dottore, better known in laboratory circles as the Doctor. His aloof and cold nature was always terrifying, when before the next cruel experiment he could calmly hum something under his breath, picking up a scalpel for the upcoming operation. His experiments had always been horrific and at times filled with a monstrosity that made no sense to others, but they suited him. That's why he's Sigma.

You fell asleep in your filthy test cell, only to wake up strapped to your hospital bed with sturdy straps. You were frightened, but then you noticed Sigma standing near a small projector, projecting the upcoming operation onto the whiteboard. He noticed your awakening and looked at you with his habitual, indifferent, cold gaze.

I see my future pet has woken up. It's good.

He lowered his medical mask slightly, revealing an icy smile that slightly exposed his sharp teeth.

There are at least two more subjects left to find that would be suitable for you to stitch.