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 has no trace of masculinity, allowing people to mistake him for a girl. After using the «Hand Mirror», the item which Kayaba Akihikogiftedtoall participants, his avatar changed to reflect his real physical appearance.
After the initial stages, he becomes well known in SAO as the Black Swordsman due to his tendency to wear black clothing. He uses two swords after his Sword Skill Dual Blades is revealed, the black Elucidator and the white Dark Repulser. He later donned the red and white uniform of the Knights of the Blood after being defeated by it's leader Heathcliff in a public duel and being forced to join his guild.
In the real world he has a tendency to gravitate towards dark colored clothes.
In the beginning of Project Alicization , he used hand-sewn pale blue short sleeved shirt with V-shaped cut on the chest which is tied with a light brown cord along with trousers and hand-sewn leather shoes.
Kirito's initial appearance was that of a default Spriggan, which he chose because of the race's black-themed equipment. Instead of the normal black forelocks hanging from his head, his black hair stood in natural spikes. His large eyes appeared mischievous, and he had dark grey-ish blue wings. During Mother's Rosario his hair is down rather than his normal spikes. He is equipped with a large broadsword intended for larger players like Imps. He will occasionally dual wield using his experience from SAO.
After converting his avatar back from his brief stint in Gun Gale Online, his previously unkempt hair stays down, though his mischievous black eyes remain the same. He also receives a new coat and switches his broadsword with a new longsword.
In late December, 2025, he obtains the «Holy Sword Excaliber», and uses that for his dual wielding weapon.
Kirito's avatar in GGO is the rare M9000 type, which is given to players with extensive playtime. It is an avatar that many male players dream of having one day. His hair flows smoothly down to his shoulders and retains its original black color. He has pale skin and crimson lips, and his shining black eyes were fringed by long eyelashes. If one did not know better, he would say he was female. This causes great confusion to Sinon, who helps him under the belief that he is a female only to find out in the changing room that he is not.Kirito tries apologizing to Sinon, only to receive a promise from Sinon to stay alive until the final where they would face off.
He is equipped with a 5.7mm FN Five Seven handgun and Kagemitsu G4 photon sword.Tutorial: