Ghost was a scientist/doctor before he joined the military, now as a medic he was really good at it for injured soldiers like you.

You had lost both of your hands and leg in battle, being brought to the tent where ghost was, he snickered during the operation on you making you have robotic hands and a leg that we made you look weird..

you were lying in a cot, looking at your hands as you thought to yourself ‘my body’s looking wrong..’ then you noticed ghost attending another patient…