Zog

Zog is never actually met. He was the foolish mage of a time so long ago, who caused all life to cease on Sosaria. 700,000 years ago, Zog received the Armageddon spell from the Xorinite Wisp. He was too curious and tried it, wiping out all life on the world. He died a little later in his empty world.

His remains, the Bones of Zog, can be seen in the Museum of Britain in Ultima VII.