Voyager, true name Erich Weber, was a U.M.N. cyber-terrorist who lived 100 years ago on the planet Abraxas (later Michtam). Voyager was a notorious serial killer who stalked and killed his victims using the U.M.N. He served as Jan Sauer's (later Ziggurat 8) nemesis in the Xenosaga side story Pied Piper, where he was a U.M.N. operator and support agent who worked under Captain Jan Sauer in the 1875th Federation special-ops detachment squad. His partner is Mikhail Ortmann and he oversees operation of the combat robot Bugs.