Meanwhile Iskavith was under house arrest at Mihael's residence after being drugged and captured by Alekei who, as we recall, had previously been tasked with spying on Mihael at Asherach's request. Finding Mihael to be more personable than Asherach, Alekei struggled to perform his duties. When Asherach found out, he beat him within an inch of his life while Iskavith, who had grown quite close to Alekei, stood silently by.
Mihael appealed to Iskavith's sense of honor while Alekei appealed to his sense of "you owe me" and Iskavith agreed to assist them in the upcoming fight against Aphelion.
Iskavith confronted his former master, Asherach, while Mihael went on ahead to find Aphelion and free his apprentices. Mihael was outmatched, but eventually gained the upper hand when Alekei managed to cause an explosion, injuring Aphelion severely.
The triumphant Mihael freed his apprentices and planned to take command of Darth Aphelions network in order to expand his reach as a home for wayward puppies and light side sith. However, at the last minute Iskavith appeared to confront him, stating that he was the rightful heir to Aphelion's power base.
Weakened by his battle with Aphelion, Mihael was forced to agree to Iskavith's terms, which required him to leave Dromund Kaas and never return.
Which brings us now to....
5 years later/the present day!
I'm going along with the time jump presented in Knights of the Fallen Empire, but I'm playing it a bit more loose in all other regards.
Let's run down the list of the characters and what they're up to now:
Full Name: Mihael Reznikov
Gender: male
Age: 36
Height: 5'10”
Eye Color: blue
Hair Color: black
Birthplace: Dromund Kaas
Current Home: Nar Shaddaa
Gender: male
Age: 36
Height: 5'10”
Eye Color: blue
Hair Color: black
Birthplace: Dromund Kaas
Current Home: Nar Shaddaa
Appearance: Mihael's former apparel is visible to the left, worn throughout what we shall call 'vanilla' SWTOR.
Currently: In semi-hiding on Nar Shaddaa. Blending in with the locals (mostly) and collecting stray puppies and misfit Jedi and Sith. A former staunch supporter of the Light side, he has found more room for grey after gaining some distance from Dromund Kaas.

Core Name: Alekei
Race: Chiss
Gender: male
Age: 29
Height: 5'6”
Build: slender
Eye Color: red
Hair Color: black
Birthplace: Csilla
Current Home: Dromund Kaas

Goes by: Aphelion
Race: part Miraluka, part Human
Gender: male
Age: 49
Height: 5'5”
Build: slender
Hair Color: white
Birthplace: Alderaan
Current Home: Alderaan
Currently: Presumed dead. Only Asherach and a few of his most trusted contacts know otherwise. His injuries from the fight with Mihael left him severely scarred and unable to breathe without a respirator. He is currently hiding out on his home planet, waiting for the chance for vengeance.
Name: Asherach
Nickname: The Red Bull
Race: Sith Pureblood
Age: 41
Height: 6'7”
Build: muscular
Eye Color: yellow
Hair Color: black
Birthplace: Ziost
Current Home: Alderaan
Nickname: The Red Bull
Race: Sith Pureblood
Age: 41
Height: 6'7”
Build: muscular
Eye Color: yellow
Hair Color: black
Birthplace: Ziost
Current Home: Alderaan
Currently: Presumed dead. While initially intent on taking Aphelion's place, Asherach's hatred of Mihael and the Light is stronger than his ambitions. Though grievously injured, he carried his master's mutilated body to safety and remains with him, plotting revenge on his nemesis and treacherous apprentice.

Race: human
Age: 32
Height: 6'1”
Eye Color: green
Hair Color: blonde
Birthplace: Dromund Kaas
Current Home: Dromund Kaas
Currently: Rampant misinformation in the wake of Aphelion's defeat has led many to believe that Iskavith protected his master's holdings during an attempted hostile takeover by Mihael. Aphelion's network and various apprentices serve Iskavith loyally.
Sidenote: I am the least pleased with Iskavith's current outfit and it may undergo further changes.