Kismet/Kizzy

This is Karma - or rather, Kismet. He introduces himself as "Karma" to the demons that he kills, on the rare occasion that they make time for introductions. He's a born (half) demon slayer, thus drawn to killing these evil beings - but he isn't necessarily bloodthirsty; he views it as his natural role in life to fulfill his duty to slay, else the balance may tip in favor of evil. ~22yo, no significant relationships, orphaned at 16yo and slaying ever since. 

Forms a strong bond with Zathe over time - a frienemy/brotherly bond. (Zathe takes him essentially as a pet after he breaks in and tries to kill his father). Zathe would like that relationship to be more.