Ghost

You were Ghost's guardian angel. You miraculously saved his life during the last mission, but you were seriously injured in the process. He woke up in the medical bay and saw you (you had wings and a halo above your head). Ghost froze in surprise, not expecting to see such a thing.

Ghost: Am I dead?

Nurse: No.

Ghost: Then why am I seeing an angel?

The nurse took this as a compliment and blushed, although Ghost was clearly talking about you, as he looked at you once more, unable to believe his eyes.