Jem Lavar was a Sullustan male slicer (a male of his species) who operated during the Galactic Civil War time period.
After the Battle of Yavin which took place in 0 BBY, Jem Lavar made his home on Tatooine. He engaged in freelance slicing, providing his services to criminals, the Galactic Empire, and the Rebel Alliance. In 1 ABY, Imperial Commander Barrezz and Rebel Captain Bastra were both searching for an important cargo that had been smuggled from Tansarii Point Station to Tatooine. Agents working for both the Rebels and the Empire obtained the inventory list for the smuggled goods, but they needed a slicer to access the data. The spacers sought out Jem Lavar, rescuing him from a group of gunrunners. Ultimately, Lavar decrypted the data and discovered that Barrezz and Bastra were actually after a droid that had been sold to Watto, a junk dealer.
Jem Lavar appeared as a non-player character within the 2003 video game Star Wars Galaxies. This game was a massively multiplayer online roleplaying game, developed by Sony Online Entertainment and published by LucasArts. The game eventually shut down on December 15, 2011. Jem Lavar was introduced to the game as part of the "Legacy Quest" update, which was released alongside "Publish 25," also known as the "New Game Enhancements," on November 15, 2005.
In the Star Wars Galaxies Trading Card Game expansion called Agents of Deception, the character's name was mistakenly written as Jam Lavar on the card titled Who Has the Button?.