Well, LeChevalier did this artwork where his main villain John Black kidnapped Kehnos son. http://www.furaffinity.net/view/186975/ and Zatumushgir's suggestion about maybe Black raising him as a loyal pirate to himself made me now got this idea: What if years later Black is forcing the old Kehno to fight his own son? Who would win? Would Kehno be cold blooded enough to kill his own son? Hey, would make a nice idea for a story or?