Kirito is someone who is not good with words as said by Klein and can be quite direct. This is due to him not having many friendships and closing others off, because of his love for computers. As such he can come off as a rude person to others such as Lisbeth and Sinon. He sometimes actually seems to enjoy angering and teasing people as well. Also from time to time, Kirito can be quite overconfident thinking he can do things others can not.
During the beginning of the game and during the beta-testing phase, Kirito’s avatar had the appearance of a handsome antagonist older than he actually was. Kirito has slightly long but neat black hair and black eyes. His delicate face showed no trace of masculinity, allowing people to mistake him for a girl. After using the «Hand Mirror», the item which Kayaba Akihiko gifted to all participants, his avatar changed to reflect his real physical appearance.
Sword Art Online Kirito Cosplay Costume
You can click above picture to buy a kirito costume.
Anime light novel: Sword Art Online