The first is a sith inquisitor named Darth Cradious. Long forgotten, he went into hiding during order 66 as a young padawan. He meet Darth Maul who quickly took him in. Trained so well that Maul had a vision that he would one day betray him. After that he sent him on a mission on one of the planets in the outter rim to abandon him. Soon after that he encountered some bounty hunters and hitched a ride on their ship, and set course to Korriban only to grow stronger with the force.
The next is one of the bounty hunters who gave a ride to Cradious. He's the same species as Maul.
There still a work in progress but tell me what you guys think