Patriarch Sergius
Japanese Voice Actor: Chikao Ōtsuka
English Voice Actor: Michael Bell
Sergius XVII (教皇セルギウス17世, Kyōkō Serugiusu 17 Yo?, Pope Sergius 17th generation), known only as the Patriarch in Episode II, is the leader of the Immigrant Fleet and, ultimately, head of the Ormus Society prior his death in Episode II. Sergius was obsessed with obtaining the Zohar for the ultimate power that his religion preached about. He used Ormus, the Immigrant Fleet and its dummy corporations and contacts, including the Hyams Group, the U-TIC Organization and the URTV Albedo, to re-open the way to Old Miltia. His goal was to retrieve the Original Zohar and Proto Ω, the ultimate weapon in the known galaxy. However, his subordinates, namely Margulis, had other plans. They wanted to take control over Ormus and return it to its original mission: finding and returning to Lost Jerusalem. They believed that Sergius had led Ormus astray with his lust for power. Therefore, when Sergius summons Proto Ω and the Ω System with it, they abandon him. Sergius is left on his own when the Federation attacks the Ω System and when Shion and her friends storm the facility. They confront the Patriarch and are briefly aided by Albedo, but Sergius turns Proto Ω's Phase Transfer Cannon on him and atomizes him. He then turns Proto Ω on Shion and her friends and they fight and defeat it.
In a desperate move Sergius tried to fire Proto Ω's Phase Transfer Cannon again, however the Red, Blue and Black Testament appear and effortlessly destroy him and Proto Ω leaving only the Zohar behind. Sergius acknowledges the Testaments when they appear before him, but no clear information on how he knows of the Testaments exists.
Sergius is mentioned several times in Episode III but does not make any appearances in the game's flashbacks to the Miltian Conflict.
In Pied Piper, another Sergius, Sergius XIV becomes head of Ormus after his predecessor, Patriarch Julius XVIII, is assassinated. While Julius sought peace between the peoples of the Federation and the Immigrant Fleet, Sergius wants to use the people of the Zohar to lead the way to (presumably) Lost Jerusalem. When Voyager appears and attempts to make contact with U-DO however, the people of the Zohar are killed and the Sergius is visibly shaken by the sight before being rushed away by a subordinate. Sergius XVII later inherits the Patriarchy and the name Sergius.
In the Japanese version of Episode II, the Patriarch is known as the Pope. The title was changed for the North American release of the game due to religious sensitivity issues.
Sergius appears in the Episode I portion of Xenosaga I&II during the U-TIC Organization's attempt to frame the Kukai Foundation for the destruction of the Woglinde. Acting as the representative for the Immigrant Fleet, the Patriarch addresses the Executive Committee on Fifth Jerusalem in the place of the random U-TIC affiliated representative seen in Episode I, his motives being to use the government to acquire not only MOMO but the Foundation's twelve Zohar Emulators as well. His role in the Episode II portion of the game is very similar to his role in the PlayStation 2 version of Episode II.
Sergius' odd appearance is one of Xenosaga's unsolved mysteries. In Episode II he has yellow eyes, white hair and corpse-like gray skin, leading some to question whether or not he was fully human or possibly even a Realian. No explanation for his unusual looks has been given to date, however in Xenosaga I&II he appears to have a healthier skin tone.
Read more about this topic: List Of Antagonists In Xenosaga