Ysho, a male Ithorian lawyer, resided on Tatooine during the era of the Galactic Civil War. Following the Battle of Yavin, he acted as the legal representative for Lady Valarian, who headed the Valarian criminal syndicate on Tatooine. In 1 ABY, Kavas Urdano, Lady Valarian's second-in-command, charged a spacer with the task of delivering an official message to Ysho in Mos Eisley. Subsequently, the spacer and the Ithorian found themselves under attack by three thugs employed by Jabba the Hutt, Valarian's primary adversary, but the spacer successfully eliminated all of them, ensuring Ysho's safety.
Ysho functioned as a non-player character within the 2003 video game Star Wars Galaxies. This game was a massively multiplayer online roleplaying game that was created by Sony Online Entertainment and distributed by LucasArts. The game was eventually shut down on December 15, 2011. Ysho was an original part of the game, specifically within Lady Valarian's Quest Series. With the implementation of "Publish 23" on August 31, 2005, Lady Valarian's Quest Series was removed from the game, which resulted in Ysho's removal as well.