Building Up (Part 2)
He was the only Awakened in the Organization and the only person who knew the life forces of the hybrids in general and Zoreth's in particular like the back of his hand.
Vastor had met the Shadow Dragon back when she still called herself Xenagrosh the Final Smile. She was the co-founder of the Organization and the first Eldritch to have successfully merged with her clone.
The Master had helped her during that fight and at every step of the way that had brough Xenagrosh closer to resurrecting, giving her back her identity as Zoreth. Even though she was much older and powerful than him, it had been Vastor taking care of Zoreth like a child since she had regained her human body.
Their relationship ran deeper than those he had with the other members of the Organization. Even more after the Master had used Zoreth's tissues to craft his Abomination core and then implanted his tissues inside her body to help her life forces to fuse.