|Status||Alive (Deceased in Nano's/True Route)|
|Voice Actor||Masaru Hishi|
Arbitro comes across quite self righteous, thinking mostly of the Line business, and doesn't seem to care about what people think of his odd "hobby," involving appreciating and modifying the bodies of attractive young men. This alludes to the fact that he may be an extreme sadist and keeps a room full of these young men for his pleasure's sake. Due to this "hobby," his mansion is full of statues of suggestive poses of nude boys.
It is likely that he suffered from psychological trauma as a child, which is why he lacks a sense of morality and has such a depraved "hobby."
Arbitro has long blonde hair that flicks out at the sides, blueish green eyes, and is about 181 cm tall. He wears an extravagant double-breasted white suit with a red shirt and lime green tie, and cradles a fuchsia feather boa around his shoulders. He always wears a white party mask with a red design around the right eye on his face.
Arbitro used to be a scientific researcher, and as such has knowledge about many topics of science, most specifically those relating to the effects of drugs on the body.
Arbitro is skilled at psychological torture and conditioning.
In the Game
As a child, Arbitro witnessed his parents secretly kidnapping young boys and doing whatever they wanted with them, including beating and raping them. This led to his later obsession with making living "dolls."
Arbitro was a researcher in Project Nicole. However, he worked in a different department than Motomi. Motomi stayed late one night and discovered Arbitro torturing a young boy in one of the surgical rooms. Motomi managed to stop him, and an investigation into Arbitro's activities was immediately undertaken. It was discovered that he had done the same to several other test subjects, and was immediately dismissed. Because of this he holds a grudge against Motomi for ruining his career. He changed his style, going from a black-haired, glasses man to a blonde-haired fashion disaster and was reduced to selling Line for profit in Toshima.
Arbitro first appears when Akira, Keisuke, and Rin go to the Palace to register Keisuke for Igura. Rin talks about his penchant for perverted and questionable things.
He's seen again later on when Keisuke returns to the Palace to actually join Igura. A scene shortly after that shows Arbitro reminiscing about how he first "fell in love" with Kau, and how Motomi "ruined his life." The next scene featuring Arbitro shows him selling one of his "dolls" to an Igura participant.
In the Anime
In the Manga
- Arbitro is never seen without his mask on.
- Back when he was a researcher for ENED, Arbitro had short black hair and wore glasses.