Zorn

No one knows what a Zorn really is, but everyone knows that it isn't like any other creature in Britannia. Appearing to defy the very laws of nature and logic, some have called Zorns the "antithesis of everything." These omnivorous terrors can simply walk through solid obstacles as if they weren't there, and negate all magic around them. They also evaporate upon death, so none have ever been studied posthumously. The Zorn is a strange foe, to be avoided at any cost.

Thankfully, Zorns are normally only found in the deepest dungeons. They have been known to associate with the equally bizarre Gazers on occasion.

Zorns only appeared in Ultima I and IV. It is unknown what happened to them afterwards, but one can assume they were wiped out by the cataclysm that created the Underworld.

Trivia

 * Zorn were to be included in the cancelled Ultima X. Link: Ultima X Zorn