NAME: The Nexus Emerald
POWERS: Keeps the dimesional boundary between the worlds of Mobius and Nexus in check, can be used to create a gateway between the two worlds.
BACKGROUND: The Nexus Emerald was discovered by Sigma during the 1st Great War of Mobius. He claimed it for his own and hid it deep within the many fortresses he would have over the next 19 years. The Emerald is a dimensional server, controlling the boundary between Mobius and a dark, twisted parallel dimension named Nexus. If the Emerald were to be destroyed, unprecendented disasters would follow. It was used to summon the Nexus Demon Lords and their minions during the events of the Sigma Brotherhood, and will play a vital role in the furious events of Series 5 and 6.