GNK-A01 was one of the basic droid designs which was used in the production of various droid models - usually for civilian, but sometimes for military purposes - by different droid manufacturers. Full production ID for this design was droid.bmf.bmf_gonk_droid_a01. It had generally humanoid form with box-shaped torso sported, but headless. It had not built-in weapons but was capable to use most ranged and melee weapons, and allowed to install different equipment. The design was popular among manufacturers for production various power droids, load lifters and maintenance droids.
During the Great Galactic War

Great Galactic War Event Great Galactic War (3681BBY - 3653BBY)

, this droids were normally used as a heavy lifter droids in the Old Galactic Market district on Coruscant, but after the Imperial invasion

Sacking of Coruscant Event Great Galactic War (3681BBY - 3653BBY)

and market's takeover by Migrant Merchant's Guild, many were reprogammed and armed to serve as the Guild's frontline combat droids.

Known operators and modifications

Planet	Organization	Modification	Weapon	Equipment
Esseles Esseles (Thranta-class Corvette) Starship Named Starships	Imperial Intelligence Imperial Intelligence (Sith Empire) Organization Reconstituted Sith Empire	Rewired Power Droid	H1.a1.v1 Heavy Blaster H1 Heavy Blaster Weapon Blaster Pistols
Coruscant Coruscant Planet	Migrant Merchants' Guild Migrant Merchants' Guild Organization Planetary and Sector	Guild Lifter Droid	L3.a1.v1 Electroblade L3 Electroblade Weapon Melee Weapons
	Justicars Justicars' Brigade Organization Planetary and Sector	Surveillance Droid	L4.a1.3 Blaster Rifle L4 Rifle Weapon Blaster Rifles
		Reprogramed Labor Droid	L1.a1.2 Assault Cannon L1 Assault Cannon Weapon Assault Cannons	Flame Thrower