a business competitor of Prince Xizor's, Colby Hoff once took a gamble that he was smarter than Xizor. In the end, Xizor won the gamble and Hoff was ruined. He committed suicide by firing a blaster into his mouth. His son tried to avenge the suicide when Darth Vader secretly allowed him into a secure passageway under Imperial City. Xizor was walking the corridor to meet with Palpatine, and the son attacked. His attack failed miserably, as Xizor quickly disabled him and snapped his neck.