The Mechthorian was a security droid design produced by Stonewall Labs during the time of the Imperial Era. This droid's appearance bore a resemblance to the Ithorian species, standing taller than an average-sized Human. The Mechthorian was equipped for combat, utilizing ranged weaponry.
During the Imperial Era, Stonewall Labs manufactured the Mechthorian units. Following the shutdown of the Stonewall Labs installation located on Naboo, these security droids remained active. A variety of droids, including several ZH-28 guards, SWL-5 overseers, LC-92 antagonists, Mechthorians, and B1-series battle droids, continued to execute their patrol routines within the laboratory complex and the surrounding areas. In the year 1 ABY, a spacer sought to obtain an experimental Old Republic droid component from a droideka situated within the Stonewall Labs facility. Upon entering the laboratory, the spacer engaged and defeated several Mechthorians in order to finally acquire the desired module.
The Mechthorians made their debut in the 2003 video game Star Wars Galaxies, a massively multiplayer online roleplaying game that was developed by Sony Online Entertainment and published by LucasArts before it was shut down on December 15, 2011. These droids were integrated into the game through the "Legacy Quest" update, which was part of the "Publish 25," also known as the "New Game Enhancements," released on November 15, 2005.