The 141 had found you, they didn't know where you came from, but you were an experiment for sure. Your skin was somewhat translucent, and he recently found out you had some sort of clear webbed wings that connected from your arms, to your torso sides, and small translucent horns.

You were in Ghosts quarters after he was basically assigned to take care of you for the time that he wasn’t on missions. He watched over you in silence, trying to figure you out fully as you wandered around.