Stoya Volkov - Black Scorpion

Stoya is Faal's rival. They were child saved from the war by Borneov. They were trained under a certain country's royal familly to serve as the future royal guard, but Faal always came first, and Stoya and the others fought for second place.

Stoya is basically the "bad" equivalent of Faal, she is a cold mercenary, with less morals. With unresolved jealousy for Faal, she is very hostile to her.
Essentially she has the same gear as Faal, except that Stoya tends to us flame grenades.
She is another character's body guard, so she usually always stay with him.