King Oberon

Suguo Noboyuki also known as Fairy King Oberon of ALphiem (ALO), is the former chief of the research institute of RECT Inc, RECT Progress, as well as Asuna Yuuki's ex-fiancé. Originally selected by Asuna's father to marry Asuna, he was adopted into her family on her father's wishes. He attended the same school with Akihito Kayaba, whom he viewed as his rival. Once Sword Art Online was cleared, he disabled the security of the SAO servers, hacking into the SAO server via router and reroute the minds of three hundred SAO players including Asuna, to ALfheim Online. He then utilized these players as test subjects for research on controlling peoples' emotions and memories. In ALfheim Online he adopted the persona of Fairy King Oberon. He was later defeated by Kirito and was sentenced to jail for his crimes.