Milleniums ago
Rakata
In time of Infinite Empire locals species called rakatians was … well, folks, it's not about books, it's about us, SL citizens of Lehon. Sure we following story lines about, but now, in present time of SL history sith are inhabitants of this planet only.
Mostly of us are human, looks like i mean. Tradition said that sith avatars need have red eyes, black skin and dark outfit. Mostly all have it for sure, but exist also furry-sith, avatars with misc outfits, like samurai themed closing or gorean too as well. But we have one important thing, we follow Dark Side.
What that mean can ask you. Well, first and last that mean have sith behaviour. This is our alfa and omega. You can have alts in jedis groups, you can play in gorean or samurai RP, but if sith community become in trouble and need your help - you come to your brotherhood in time, ignite your lightsaber with red blade and fight. Point.
This pic, rakatian, taked from Kotor, that i never played, finded on the web. Maybe will made similar avatar later. This one is unarmed. Melee weapons before lighsabers presented by vibro blades. Rakatians used vibro with double blades, similar as naginata.