Gods of death create death knights. They are martial champions of evil. These horrible undead are most commonly raised from the ranks of blackguards, fighters, rangers, and barbarians; but a paladin who falls from grace near the moment of death may also become a death knight.
这是3R的说法,死亡之神复活死去的黑暗卫士、战士、巡林客和野蛮人而产生的不死生物或者是死前堕落的圣武士就变成了死亡骑士吧