Albedo Piazzolla is one of the main antagonists of Xenosaga. He is U.R.T.V. Unit 667, and one of the four surviving U.R.T.V.s from the Miltian Conflict. He is also the biological younger brother of Jr. (Rubedo) and older brother of Gaignun Kukai (Nigredo). 'Gifted' with immortality, Albedo sees it as a curse instead of a blessing. Albedo is a misanthropic loner who enjoys watching others suffer and die. In Episode I, Albedo is working for Margulis and the U-TIC Organization.