Finally getting to these, @jjjwhovian !

Calphayus, the former Dread Master, was spared by Ulannium, Corellan and company, and was working on rehabilitating himself on Tython when the Zakuul invasion came. Not wanting to be a burden on the Order as they planned their evacaution, but not able to aid in the defense, the recovering Sith slipped out of the Temple one night, disappearing into the wilderness. Will he return? Will we ever learn what happened to him? … well, I'll get around to it.

Chaney Barrow, after her encounter with Gahraath Vaiken on Belsavis, got off the planet and went back to being a freelance slicer for inscrupulous individuals. I don't have strong thoughts about her future, though I have turned that over in my head a few times. I do have some headcanons on her backstory, though! The Slice Girls

Corellan and Kira persuaded Agent Galen that being turned into a cyborg didn't have to mean the end for him. He ultimately went back to the SIS, volunteering for a dangerous undercover assignment. Galen would ultimately meet his end, but it would be on his own terms doing something that mattered.

Dread Master Cats

(Brontes being a Tiny Void gives me life lol)

Masterlist

Imprisoned on Belsavis for over twenty-five years with the other Dread Masters, Calphayus and the others were freed by the Emperor's Wrath and evacuated from Belsavis by the Imperial Guard, quickly launched into a galaxy at war and ripe for the kind of terror and devastation they had caused in the Great Galactic War.

With the death of the Sith Emperor, however, the only power sufficient to keep them in check was gone, breaking their loyalty to the Empire and allowing them to go rogue, forming their own Empire. Calphayus planned to unleash an extragalactic horror banished by the Gree on the Republic and Empire, failing due to the efforts of the Gree's most recent ally, the Barsen'thor.

It was after these failures that Lord Styrak, with a large portion of the Dread Host, moved to Darvannis. However, the combination of several Republic and Sith legends thwarted his efforts there and led to Styrak's death. This unbalanced the Dread Masters and drove them insane, changing their goals from building an Empire to galactic slaughter.

I was watching this again because I was curious what it was, and just, I can't stop giggling! THE DREAD MASTERS WON'T LOOK AT POOR DI'ANS.