Atsuomi Ayanokouji also known as Professor Ayanokouji, is the father of Kiyotaka Ayanokouji. He is the founder and currently in control of the White Room.

According to Chairman Sakayanagi, he has stronger ambitions than anyone and an unyielding and indomitable fighting spirit, despite having never possessed any special talent. That is the reason for his rise, to the extent that, at one point in time, he could move the country.

Despite being proud of his son, Professor Ayanokouji only seems to value him more as a possession. He openly stated that he knew his son would not be fooled by a tactic showing signs of any fatherly affection. He also tried to command Kiyotaka to sign the withdrawal form.