Dreamer

The Dreamer was a Sith who, according to legend, engaged the Sith known as the Monster-Slayer in a lightsaber duel at the Pits of Paxxis around 3400 BBY. Both Sith ultimately died due to the vapors of the Pits. Millennia later, the Jedi Luke Skywalker annotated an illustration of the confrontation between the Dreamer and the Monster-Slayer that had come into his possession.

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