Faust is a shaman Doctor.
(ファウストVIII世, Fausuto Hassei)
Hailing from Germany, Johann Faust VIII is the eighth-generation descendant of the legendary Doctor Faustus. His ancestor is the main character of the renowned German tale, "The Tragedy of Doctor Faustus", as the man who was so consumed by lust for all the pleasures of the world, he made a deal with the devil to gain them. For with necromancy skills, the Devil (more commonly known as Mephistopheles in Faust literature) also granted Faustus youth and riches. In the end, Faustus died a terrible death when Mephistopheles came to claim his soul at the end of the seven year contract.
Faust is usually a very detailed and patient person who thinks scientifically unless the matter concerns his beloved Eliza. He does not tolerate interruptions while working (an example was having Eliza keep the X-Laws at bay, while he attempted to help Jeanne), and even less any criticism, insults or threats directed at Eliza.
Faust is the embodiment of dedication; he has given up everything for his wife and is willing to do anything, no matter the costs to protect and take care of her. It is this single-mindedness and selflessness that gives him his great strength in the Shaman Fight. Beyond all the mental instability, emotional suffering and somewhat gothic moods, his greatest strength comes from his pure heart; pure because he knows that he only lives to love and protect his dear Eliza.
Faust is an insane but incredibly brilliant medical doctor who delights in saving lives. Naturally, his work reveals facts of his personality. He cures one of his opponents after their shaman fight, an illness that many doctors have given up on previously. Because Faust had devoted much of his time to seeking cures for illnesses, he is utterly devastated when he is unable to save Eliza and goes as far as attempting to resurrect her. When he treats Jeanne of the X-laws, he does so with zeal that nears madness. During the time in between matches, he is usually reading medical books, and feeds himself breakfast, lunch, and dinner through an I.V. line.