Holowan Laboratories, also known as Holowan Mechanicals, was a company active during the Clone Wars, a galaxy-wide conflict fought between the forces of the Galactic Republic and Confederacy of Independent Systems, that developed and manufactured weapons and battle droid models. They manufactured the IG-series of droids, which included the IG-100 MagnaGuard, the IG-86 sentinel droid, and the IG-RM bodyguard and enforcer droid, the former being fielded extensively by the Separatist Droid Army. They also manufactured the electrostaff, a weapon often used by MagnaGuards.