Well, tbh... There's not many names that start whit a W, at least not of english origin. I could think that 'WK' is the RL initials, and M is his in game initial? I've got no idea, this is simply my thoughts... Otherwise the 'W' could stand for Warcraft as well, and the 'KM' of something else? though there is not many words in english starting whit a K either... Anyways, I'm just laying my thoughts on the web now really, I've got nothing concrete... Yet...