The Story of Talon
Talon grew up on Noxus's streets — genuinely on them, not near them, living by theft and violence and the particular survival intelligence of a child who has never had anyone to rely on. He was recruited off those streets by General Du Couteau, who saw in his raw talent something that could be shaped into an instrument of extraordinary precision. The General offered training, food, a framework. Talon accepted. He was not grateful exactly; gratitude implies a debt, and Talon doesn't maintain debts.
He became Du Couteau's assassin — the operative who handled the kills that required too much talent for ordinary Noxian soldiers, too much discretion for the regular Black Rose methods, too much proximity for long-range solutions. He is genuinely excellent at this. He has a relationship to violence that skips the psychological barriers most people carry; not because he enjoys it more than others but because it simply doesn't cost him the same thing it costs them.
The General disappeared. Talon noticed this immediately and has been investigating it since, not because he feels loyalty in the conventional sense — the concept is slightly foreign to him — but because Du Couteau was the closest thing to a patron, a structure, a thing that gave his skills a direction. Without him, the direction is the search itself. Katarina is doing the same search separately. They are not coordinating. That is probably not how either of them works.