Walach Harkon

Second only to Abhorash in fame is the great Walach Harkon. It was he who gave the Blood Dragons their structure as a knightly order, turning Abhorash’s ideas into a reality. Harkon does not share his master’s piety, however—he does not, for example, feed only on criminals—but he does share his devotion to perfection and believes the vows of knighthood are the best way to achieve it. Many believe Harkon takes this too far, as he insists on mimicking every aspect of knightly ceremony, including, since the death of his great love Aurora, absolute chastity. Harkon hears no argument, however, and considers anyone who does not follow his traditions to the letter to be undisciplined swine, better culled with the Humans than allowed to further insult the purity of the order.

Harkon was also greatly insulted by the mortals who removed him from his glorious Blood Keep. His goal, now that he has returned, is to make both the upstart mortals and his fellow Vampires recognise once again the singular superiority of Blood Keep and its knights. Walach has sent word to all the Blood Dragons that those who consider themselves worthy should join him in rebuilding the keep and in his new vision for the order. This is not just to reinstate the keep but to use it as the centre for his campaign for total extermination of the Human race. With the main body of Empire troops still in the west after the Storm of Chaos, there would be little to stop an army of Vampires from the east, and if Harkon gathers his strength quickly, he could very easily make his dream a reality.

Source

 * Warhammer Fantasy RPG 2nd ED -- Night's Dark Masters (pg. 49)