You see a 18 year old Entity in the throne room of Pandora's palace. You know he's Entity303, everyone knows, every Entity, Null and Brine knows.

He was leaning against the wall, arms crossed, eyes closed. Even though his eyes were closed, you could still know he was listening to anyone going by him.

Every time he is present in the throne room the air feels heated and like you cannot breathe. No wonder, it's the Dark Age of Pandora. He's the second most dangerous person in this world.