Headmaster Deus

Headmaster Deus was the Headmaster of the Grand Elders before Headmaster Dio.

Nothing about his life was very well documented aside from that fact that he was the first Headmaster of the group living for an astounding 453 years.

Revival
During the 18th century, a new Grand Elder has joined the ranks of Headmaster Dio who calls himself "Deus." It's unknown if there's any relation between him and Headmaster Deus, as he shrouds his face in a hard helmet helmet and wears dark clothing. Both this "Deus" and another recruit Agito join the ranks of the Grand Elders during the same time.