Clan Taldryan
The Emperor was a man of many secrets. No-one, not even Darth Vader, knew all of his projects and the full extent of his idealism. The Emperor's mind was a complex pattern of thoughts and ideas and these were put into practice often without anyone's knowledge.
Clan Taldryan was originally one of those projects. It's predecessor was Team Ektrosis. Team Ektrosis was a group of Scientists and Force-gifted agents. The team was created by the Emperor to try and experiment with the Force's effect on the body and reverse the aging process that was slowly overcoming the Emperor. The members of Ektrosis were willing to sacrifice part of their lives to achieve this end and set out to try and probe deeper into their understanding of the Force. The team retreated to their headquarters and for three years were cut off from the galaxy working on their project. Rumours escaped their headquarters, rumours of unimaginable torment and unspeakable atrocities. Some said Team Ektrosis had created a being made entirely from the Force, others that there were creatures so twisted that they could not die but only live in constant agony. The truth, however, was then and still is shrouded in mystery.
After their three years of work, three years of torment and pain they returned to the Emperor with news of their work. Whatever they expected from him they received what none of them wanted. Their experiments had gone to far and meddled with powers even the Emperor would not touch. Ektrosis were banished from the Empire, from their families and all they knew. They were sent to the very edge of civilisation. There they continued to work on their experiments with what meagre equipment they had. They improvised almost everything and were able to continue to some extent. There were rumours that the land around where they worked withered and faded whereas anything touched by the Force powers they worked with was able to survive.
Years went by and the Emperor was vanquished and killed at Endor. Many were born and died; guilds and fleets began to establish themselves. The Emperor's Hammer became powerful and news of it's Dark Brotherhood of Jedi spread far, even to the remnants of Team Ektrosis. And so Ektrosis returned from it's exile and became House Ektrosis of the Dark Brotherhood. No-one outside of Ektrosis knew the truth about their past but those inside were unwilling to share their dark secrets.
House Ektrosis grew powerful and were eventually strong enough to form Clan Taldryan. Ektrosis took it's place as the Krath House of the Clan, joined by Dinaari for the Obelisk and Archanis for the Sith. The Clan entered the Brotherhood by winning the Great Jedi War and all are committed to keeping the grand reputation that Ektrosis had before them.