Slayers dye their hair bright orange, and stiffen it with pig grease so that it sticks out at alarming angles. Their way of life invariably means that many achieve their ambition and are slain at the hands of whatever ferocious beast they have confronted. Others, the least successful ones in a sence, tend to survive either because they are the toughest, the fastest or the most determined. This process of natural selection weeds out all those who do not have exceptional abilities, so you can be fairly sure that any Slayer you meet is exceptionally tough, violent and psychopathically dangerous. The Slayer Lord is just the craziest of them all -- and judging by that giant orange hair he's the toughest, too.  :)