Wutzek

Wutzek was the last remaining Force demon known to exist during the Imperial Era. A member of an extremely powerful race that once ruled the galaxy in its distant past. Wutzek was captured by an evil-worshipping cult called the Five, which imprisoned him for centuries as a curiosity aboard their warship within the Hellhoop but was able to escape during the Galactic Civil War with the aid of the Wookiee Chewbacca sometime between 0 and 3 ABY, and proceeded to swiftly destroy any trace of the Five.

Text and facts from the “Wutzek” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.