Jessk was a gambler of the Trandoshan species (a male), who was alive during the time of the Galactic Civil War.
Following the Battle of Yavin, Jessk took up residence for a period in Kachirho, a settlement located on the world of Kashyyyk. During his time there, he was a regular at a local cantina in Kachirho, where he frequently played sabacc. However, in 1 ABY, Jessk was discovered to be cheating other patrons, including a friend of the cantina's proprietor. As a result, the owner decided to personally address the situation. One of his employees, Tien Wallub, arranged for a bounty to be placed on the Trandoshan's head through Imperial Bounty Officer Stren Colo. Jessk was compelled to leave Kashyyyk, relocating to Mos Eisley on the planet Tatooine. Unfortunately for him, he quickly drew unwanted attention by continuing his cheating ways in the Mos Eisley Cantina. A bounty hunter, who had been pursuing Jessk since his time on Kashyyyk, obtained information from a gambler he had cheated and was able to locate the Trandoshan. The bounty hunter eventually found Jessk in the Mesric Plateau and killed him in the ensuing confrontation.
Jessk was featured as a non-player character in the 2003 video game Star Wars Galaxies. This massively multiplayer online roleplaying game was developed by Sony Online Entertainment and published by LucasArts. The game was shut down on December 15, 2011. Jessk was introduced to the game with the release of the expansion pack Rage of the Wookiees on May 5, 2005.