An another example of deadly remnant of Tython

Tython Planet

's mysterious past, the original purpose of the droids had been lost in the mists of time. Some speculated they were once guardians, programmed to protect the powerful secrets of Tython's original Jedi inhabitants. Others believed the droids were used for combat training by the order shortly after the creation of the first proto-lightsaber. A more sinister theory suggested the droids were somehow involved in the destruction of Kaleth itself. The truth was that, long ago, droids served and protected the ancient Jedi of Kaleth. This model was not as common as the basic guardian droid

Tythonian War Droid Droid Old Republic Assassin Droid classes

.
However, time had ravaged their bodies and corrupter their logical circuits, driving them insane and causing them to attack anyone they saw. For millennia, droids have been scavenging various weapons and equipment from those unfortunate enough to encounter them. During the Cold War

The Cold War Event Cold War (3653BBY - 3642BBY)

, similar-looking droids were used by various organizations throughout the galaxy, but it was unclear if these droids were newly built or somehow brought from Tython and reprogrammed to serve their new masters.
After the end of the Great Galactic War

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

the Jedi Order

Jedi Order Organization Galaxy-Wide Organizations

returned to their ancient homeworld and began to explore the planet, they encountered these ancient war machines roamed the ruins of the city of Kaleth armed with modern weapons and attacked anyone on sight. Many Jedi archaeologist were confused as to the purpose of the droids' unprovoked attacks. Jedi Master

Jedi Master Miscellaneous Ranks

Till'in

Till'in (Kel Dor) Character Minor Characters (TOR)

worked on uncovering their purpose as well as understanding the ancient technology that kept them running for several millennia, and asked

The Last Defenders Event Cold War (3653BBY - 3642BBY)

a duo

Tython Jedi Duo Organization Temporary Unions

of Jedi Padawans

Jedi Padawan Miscellaneous Ranks

to help with his mission.

Known operators

Planet	Organization	Modification	Weapons	Equipment
Tython Tython Planet		Tythonian Watcher	L1.a1.1 Blaster L1 Blaster Weapon Blaster pistols and L3.a1.1 Electroblade L3 Electroblade Weapon Melee weapons	Charged plating
		Ancient Tythonian Defender
		Tythonian Chamber Sentinel	L3.a1.1 Sniper Rifle L3 Sniper Rifle Weapon Sniper rifles
	Flesh Raider Forces Flesh Raider Forces Organization Planetary and Sector	Reprogrammed Trial Droid	L1.a1.1 Blaster L1 Blaster Weapon Blaster pistols and L3.a1.1 Electroblade L3 Electroblade Weapon Melee weapons	Charged plating and electrodarts
Coruscant Coruscant Planet	Black Sun Black Sun Organization Galaxy-Wide Organizations	Black Sun Surgeon Droid	L3.a1.1 Electroblade L3 Electroblade Weapon Melee weapons