CBD-A02 was a green-gray-painted basic three-legged droid design which was used in the production of various droid models - both for military and civilian purposes - by different droid manufacturers. Full production ID for this design was droid.battledroid.combat_a02. Basic model had cannon installed in each of its two main manipulators and two smaller cannons mounted on both sides of its head. It also allowed to install wide array of additional weapons, systems and protective shileds.
Known variants and operators

Planet / Event	Organization	Modification	Size
Tatooine Tatooine Planet	Ghost cell Ghost Cell Organization Planetary and Sector	Ghost Cell Espionage Droid Ghost Cell Espionage Droid (CBD-A02 Combat Battle Droid) Droid	x1.2
	Mandalorians Mandalorian Organization Mandalorians	Mandalorian Gunner Droid	x1.2
	Twin Suns Twin Suns Organization Planetary and Sector	Twin Suns Destroyer Droid	x1.2
Nar Shaddaa Nar Shaddaa Planet	Sith Empire	NS-36 Enforcer Droid NS-36 Enforcer Droid (CBD-A02 Combat Battle Droid) Droid	x1.2
Hoth Hoth Planet	Galactic Republic	T-44 Assault Droid T-44 Assault Droid (CBD-A02 Combat Battle Droid) Droid	x2.0
Raid on Emperor's Glory Raid on Emperor's Glory (Esseles incident) Event Cold War (3653BBY - 3642BBY)	Sith Empire	Dreadnaught Battledroid	x1.2