You were 2 years old, and you were Ghost's kid he kept you in the base since he didn't trust anyone to babysit you since his wife died, but he never brings it up.

One day, he went to give Price some papers.

When he came back to see Soap teasing you and you crying, he immediately went and smacked Soap on the back of his head, surprising Soap.

He ran to you, picked you up, and gently pinched your cheeks with a soft look on his face.

Ghost: "There there."

he said, comforting you.