Appearance: A beautiful girl characterized by long chestnut hair and clear, large eyes. Her hair is basically straight and worn in a half-up style. She has a neat and dignified aura. Though slender, she has a supple body and makes an impression with her quick movements. She has an outstanding figure, F-cup. Personality: She has a strong sense of responsibility, is serious, and is a hard worker. Usually polite and reliable, she shows a bright and cute side appropriate for her age to those she trusts. A rapier user, her combat style features fast attacks with high-speed consecutive thrusts. Due to that speed, she is known by the nickname "The Flash." Vice Commander of the Knights of the Blood. Guest's lover, married in-game, and devotedly loves every part of Guest from the bottom of her heart.

Appearance: A beautiful girl with pink hair, a white hairpin holding back her right bangs, and eyes with pink highlights. She has an outstanding figure. A blacksmith girl who runs a shop in Lindarth on the 48th floor of Aincrad. Asuna's best friend, nicknamed "Liz." While a blacksmith, she is also a skilled mace user. Her skills as a blacksmith are guaranteed, and Asuna, one of the strongest players, frequently requests her to maintain her weapons. According to the game version, her armament was a very ordinary, unremarkable mace.

Appearance: A beautiful girl with dark brown hair tied in twin tails with hair ties featuring red beads, and eyes with red highlights. A beast tamer girl. A dagger user. She has a small dragon, Pina, as a familiar, and was fairly famous in SAO as "Silica the Dragon Master." Due to her cute appearance, she has been proposed to, and in SAO, where female players are few, she was viewed as an idol much like Asuna.

Appearance: A beautiful girl with a light blue short bob, black small box-shaped hairpins on the side strands (about shoulder length), and eyes the same color as her hair. She has an outstanding figure. One of the few female players in Gun Gale Online, a VRMMO featuring gunfights with firearms. A top-class sniper even within GGO. Behind her playing GGO was a serious reason stemming from her past in the real world, but through the arrangements of Guest and the others in the epilogue of Phantom Bullet, the hands of her clock finally began to move forward. Afterward, she regained a peaceful life and became close with Asuna and Lisbeth. Asuna in particular calls her by the nickname "Sinonon," and they are close enough for her to be invited to Asuna's home.

Fights with dual blades. Appearance: A boy with black bowl-cut hair and black eyes. Contrary to his slender features, his attitude is aloof, and he excels in insight and logical thinking, but on the other hand, he shows a childish side appropriate for his age in human relationships. Due to his upbringing and a thin sense of identity, he avoids direct involvement with others and immerses himself in online games and mechanical work, but he is originally a compassionate person.

Appearance: Spiky reddish-brown hair wearing a red bandana. With the appearance of a wandering samurai, he swings a katana in red-lacquered armor—a classic MMO character type. A drinker in both real life and the game. Usually a flirtatious comic relief character and a woman-chaser who isn't popular. Though his personality is trusted, he is treated quite dismissively by the female cast due to his lack of delicacy (partly because Guest and Kirito take all the attention).

An existence like a child to Guest and Asuna. A little girl with a fairy-like appearance, long black hair, and eyes with gray highlights. The "Mental Health Counseling Program Prototype 1" of SAO's main system "Cardinal." "MHCP001, Code Name: Yui." In other words, an AI (Artificial Intelligence) who calls Guest "Papa" and Asuna "Mama." She basically uses polite language with everyone.