Professor

Haksheen White, most commonly called the Professor, is a supporting character in the Xenosaga series. He is a scientist who lives in the Kukai Foundation and is part of the Erde Kaiser-related sidequests before taking a larger role in the storyline in Xenosaga Episode III. He is also a supporting character in Xenosaga: The Animation and Xenosaga Freaks.

Appearance and personality
The professor is an old man who is mostly bald with white hair and glasses.

The professor is obsessed with giant robots, considering A.G.W.S. mere children's toys. He can often be found shaking and comes off as rather paranoid, initially believing the party members to be spies. While he is able to recruit an assistant, Scott, his alcoholism drives him away. Eventually he learns the errors of his ways though and reunites with him.

Episode I
The Professor can be found in the basement of the A.G.W.S. Part Shop in the Kukai Foundation, a place he calls the Foundation Robot Academy. Any member of the party can come here to meet him. When first arriving, he appears quite nervous at first, but recruits the party to help find robot parts scattered across the universe so he can build an invincible giant robot. The party is able to bring him the robot part legs, arms, head and body respectively and get a powerful ether spell for Shion each time. The Professor eventually gets an assistant, Scott, but due to his constant drinking he gets in an argument with Scott and fires him. While he initially denies that he is worried about Scott, when his lab equipment stops working the Professor realizes the importance of the power of friendship and that Scott is needed. The party is able to find Scott at the Iron Man Bar and bring him back to the Professor. Together they create the giant robot Erde Kaiser.

Episode II
The Professor moves his laboratory to the lower level of the Elsa, although initially does this without the knowledge of Matthews and the Elsa crew. Eventually he is discovered and reveals that he has been spending a lot of money using Matthews' name, causing his debt to increase even further. Matthews agrees to let the Professor stay on board as long as any profits used from his experiments can be used to pay down his debt. The Professor retains Scott as his assistant and also declares Allen and KOS-MOS to also be assistants of his. Upon recovering Robot Parts from Segment File addresses he can once again create powerful Erde Kaiser ether spells for Shion.

In the post-game, the Professor explains that he has been seeking to build a giant robot due to a man he believes to be his twin brother, although he admits they are not actually related. This man, whom he calls the Dark Professor, has an evil scheme involving the Forbidden Devices included across the world, and is building his own Erde Kaiser, called Dark Erde Kaiser. The professor hopes to defeat him, believing he'd win the respect and adoration of millions and possibly a country club membership. By meeting the Other Professor in Second Miltia, then completing a series of optional dungeons, the party is eventually able to make it to the Space Coliseum where the Professor and Dark Professor confront each other. Once the Dark Erde Kaiser is defeated, the Professor considers himself victorious and the Dark Professor admits defeat.