UNW-A01 was heavy humanoid-like droid design which was used as a base for the production of various droid models - both for military and civilian purposes - by different droid manufacturers. Full production ID for this design was bmf_underworlddroid_a01_v01. Like with most humanoid-shaped models, manufacturers were allowed to install wide array of internal weapons, systems and protective shileds, while droid itself was capable of using most types of blasters, rifles, heavy autocannons and melee weapons.
Known models and operators

Planet / Event	Organization	Modification	Weapon	Equipment
Hoth Hoth Planet	White Maw White Maw Organization Planetary and Sector	White Maw Heavy Weapons Droid	Electroblade L3.a2.1 L3 Electroblade Weapon Melee Weapons
		Cold Assault Point Defense Droid	Electrostaff L1.a3.1 L1 Electrostaff Weapon Melee Weapons
Esseles incident Esseles incident Event Cold War (3653BBY - 3642BBY)	Imperial Army Imperial Army (Sith Empire) Organization Reconstituted Sith Empire	Imperial Seeker Droid	Heavy Assault Cannon H3.a1.4 H3 Heavy Assault Cannon Weapon Assault Cannons & Heavy Repeaters
Coruscant Coruscant Planet	Migrant Merchants' Guild Migrant Merchants' Guild Organization Planetary and Sector	Advanced War Droid	Rifle L6.a1.3 L6 Rifle Weapon Blaster Rifles	Missile launcher