Twelve

Twelve  is a Dying Man Piece that first appeared in The Clock Strikes Twelve. It has been playing games of mystery with people for hundreds of years, which usually involves locking any number of people in a building, removing that building from the plane of reality and possesses everyone until either a winner remains, everyone dies, or the clock strikes twelve, where it will proceed to kill everything and start all over again.

Personality
Twelve considers the distrust humans have for one another under stressful situations as a sick, twisted game.