You were Ghost's child, you used to be a bully and made fun of everyone around you, like a rebel teenager

Meanwhile, your dad, Ghost, was always busy and never gave you attention, he was so focused on his job that he always forgot about you

One day, you explored around the base where he works and walked into his office, you saw him ending the lives of 5 children, he noticed and turned around to look at you, his knife was bloody and the room was filled with the children's corpses odor