Arkahn Greystar was a weapon smith of the Twi'lek species (male) who worked for Lady Valarian during the era of the Galactic Civil War.
In the year 1 ABY, Greystar became one of several external hires brought in by the Whiphid crime lord Lady Valarian. His role, along with Iris Tanada Sinclair, Fnast Drexler, Careem and Emanon, was to serve as her command staff in a series of raids targeting her rival, the Hutt Jabba Desilijic Tiure. This group established their base of operations within the Valarian Strategic Command Bunker, situated on the planet Tatooine. The bunker was heavily defended by Valarian's guards and the Blood Vandals. From this location, they initiated and coordinated their attacks against Jabba. Ultimately, Greystar and the other commanders met their end when a spacer employed by Jabba was successful in stopping the raids.
Arkahn Greystar appeared as a non-player character within the 2003 video game Star Wars Galaxies. This game was a massively multiplayer online roleplaying game created by Sony Online Entertainment and released by LucasArts. The game was shut down on December 15, 2011. Greystar was incorporated into the game as part of the updated "Jabba's Theme Park," which was launched alongside "Publish 25," also known as the "New Game Enhancements," on November 15, 2005. One of the missions given by Jabba tasked the player with assassinating Tyrok.