The Centurion (Earth-1)

The Centurion was a herald of Necrocraft and searched and killed people who disagreed with Necro. He killed KIng Pacific and his fraction of Atlantians. He killed many people and single handedly killed the entire government of Asia. Centurion was later on revealed to be M who was thought erased from the timeline after the events of Kingdom M. The Sword and Armor of Centurion where kept in the Keep after the Invasion and M was freed from Necrocraft's influence.