He/They
Used to work at a military hospital/laboratory.

Melancholic and almost always tired.
He is short tempered, but can stay calm if it's absolutely needed.
Tents to overwork a lot, in hopes of forgetting about problems in his life.

Has a very complicated life and a lot of past mistakes.

His favorite things are:
Autumn and it's vibes; Sweets and meat are his most loved foods; His boyfriend David(belongs to my friend); Baggy/oversize clothing; Calm and sad music.

He absolutely hates:
Loneliness and being left behind; Being treated in a childish manner; Himself(this may sound edgy, but he is struggling with severe self-hatered).