Exar Kun

Exar Kun was a mythical Sith Lord from the Qel-Droma Epics. Double-bladed lightsabers dated back to the mythical Sith.

Behind the scenes
Exar Kun was first mentioned in the new Star Wars canon in Gadgets and Gear, a 2019 supplement to the Star Wars roleplaying products made by Fantasy Flight Games. The character was created by Kevin J. Anderson and originated in the Star Wars Legends continuity, where he first appeared, albeit unnamed, in the 1994 novel Jedi Search before being fully introduced in the sequel released that same year, Dark Apprentice.

In the 2018 reference book The Art of Solo: A Star Wars Story, set decorator Lee Sandales describes the obsidian stone used as the base for crime lord Dryden Vos's desk as having been plundered by Vos from the Sith temple of Exar Kun, although no in-universe source has yet confirmed this.