Nobuyuki Sugou

須郷伸之, Fairy King Oberon
Originally selected by Asunas father to marry Asuna he was adopted into her family on her fathers wishes. He attended the same school with Kayaba Akihiko who he viewed as a rival. During the Sword Art Online incident he took advantage of the chaos to steal test subjects for research along with Asuna. In ALfheim Online he adopts the persona Fairy King Oberon As the Fairy King Oberon he keeps Asuna locked up in a bird cage at the top of the World Tree. In the real world he confronts the powerless Kazuto by voicing his intentions of wedding the unconscious Asuna. While keeping Asuna locked up in ALO he constantly visited her just to fool around with her. From his actions one could say that he is a pervert.