Kol was basically born into the military and joined as soon as he could, despite his dad telling him not to. When he graduated, his dad committed suicide but Kol pressed on. Over the years he rose through the ranks as a sniper and was eventually promoted to Special Ops. Knew of Janus during the time when he was basically a war hero. Went a mission to secure intel, mission went sideways, he lost his right eye (Which was replaced with a cybernetic eye) and two teammates. Intel that was retrieved turned out to be bad intel and caused Janus to sink three boats, one with innocents on it. Following that, Kol tried very hard to find out what the intel was with his semblance but after years of trying and failing and learning horrible truths instead, he grew numb to it all and said "Fuck it, I'm going solo. If you try to chase me, I'll end your careers and the careers of everyone you care about." and now he's a mercenary.