The Jantsk mercenaries were a band of hired guns, a mercenary group, operating out of the planet of Endor. Their moniker came from their chief, Vurrha Jantsk. During the era of the Galactic Civil War, Jantsk, along with his mercenary unit, journeyed to Naboo, a planet situated in the Mid Rim, with intentions of launching an assault on the chambers of Queen Kylantha. However, unbeknownst to the rest of his company, Emperor Palpatine himself was the one who contracted Jantsk and his team for this particular assignment. After the mission's completion, their leader met his end, assassinated by an unknown Imperial spacer acting under the Emperor's direct command.
The Jantsk mercenaries made their debut appearance in the 2003 video game Star Wars Galaxies. This game was a massively multiplayer online roleplaying game created by Sony Online Entertainment and distributed by LucasArts, before the game shut down on December 15, 2011. The Jantsk mercenaries were incorporated into the game as part of the "Imperial Theme Park" revamp, which was launched alongside the "Chapter 6.12" update on September 13, 2007.