Voyager

From Xenosaga Wiki

A U.M.N. cyber-terrorist who lived 100 years ago on the planet Abraxas (later Michtam). Voyager was a notorius serial killer who stalked and killed his victims using the U.M.N. He served as Jan Sauer's nemesis in the Xenosaga side story Pied Piper.

See also: The Black Testament, Erich Weber.