Kar'tek

Kar'tek, designated TC9-173 by the Tau'ri, was a planet in the Milky Way galaxy which held a Stargate.

History
Once home to a thriving population of Volca who opposed the Goa'uld, Kar'tek was turned into a desolate planet for daring to oppose the Goa'uld. Since then the Volca and another native species, the Mar'kak, survived by scavenging anything they could from their near-lifeless world. Ever since the attack, the Goa'uld used Kar'tek as a graveyard planet where they would send traitors who questioned their might. The Unas-hosted symbiote Ulysses was one such traitor, who was exiled to the planet after his master was destroyed by Ares. The Volca attributed their ability to phase through objects to Ulysses and though it is unknown if he did in fact give them this ability, he was in posession of a piece of technology which could mimic the ability for a short amount of time.

Some years later, Mars too was banished to Kar'tek by Ares for attempting to usurp his 'fathers' position. Once on Kar'tek Mars discovered the local Volca, and their phase-based resistance to being taken as hosts, as well as the native Mar'kak. Because of the lack of suitable humanoid host bodies, Mars instead chose to build cyborg bodies with Mar'kak as their biological component and he, along any others who were banished to the planet and chose to serve him, entered these Mar'kak and took control of their cyborg bodies. It was through this method that Mars managed to rebuild his civilization, basing it on that of the Roman Empire, and enslave the native Volca.

Mars's civilization grew through many generations, and he soon ruled over the entire planet as his own.