I know that the brother that Vincent Nightray has a fixation over is Gilbert Nightray, though he did not appear to be a bad person. Vincent also holds rivalry, if not enmity, towards Xerxes Break, though I've only spoken once to Sharon Rainsworth, who seems to be Break's assistant. [It's not much, but he did avoid speaking with the most 'dangerous' of people. That should be a good thing! :|b]