Yukitsugu Sai

Yukitsugu Sai (狭井 雪嗣) known as Jellal in «Sword Art Online» and as Itsuki in «Gun Gale Online» is a reoccurring character in the Sword Art Online Series and a Major Antagonist in the Aincard Arc and the Main Antagonist in the Phantom Bullet Arc. He was one of the 50,000 players trapped in Sword Art Online. Where he was a prominent member of the «Knights of the Blood» While he is seemingly a calm and carefree player, Jellal is secretly on a constant search for something to excite him and is revealed to be a member of «Supreme Army» the Infamous Powerful Player Killing guild and the Right-Hand man of Zarc.

Gun Gale Online Avatar
Sai's Gun Gale Online Avatar has a red- and narrow-eyed avatar with dark grey hair. His outfit prominently features black and white colours, with red seams overall. The inside of the arms of his long-tailed coat is light blue. He carries gun shells on the side and back of his coat.

Personality
Sai appears to be a mysterious character who is never willing to share anything regarding his real personality. Instead of being an open character, he enjoys providing various bits of information about himself, before promptly following up by claiming that he was joking, thus even his Guild and Squadron members do not know much about him.

When is Reveal to be a member of the Supreme Army Sai eventually confessing to the boredom he feels, as well as revealing that the only thing in the world that had sparked his heart was Kirito Ren Shuto and Zarc who he believes they could relieve him from the boredom he felt.