Alice Zuberg

Alice Schuberg (アリス・ツーベルク) is a secondary character in Alicization Beginning and the childhood friend of Eugeo and Kirito (during his first dive into Underworld).

Alicization Beginning
In the beginning, Alice was a sacred arts apprentice under Sister Azariya, and she would bring lunch to Eugeo and Kirito at the Gigas Cedar every day. On a quest to find ice at the «Mountain Range at the Edge» to make their lunches last longer, they take a wrong turn in the cave and turn up into the edge between the Human World and the Dark Territory. Looking up, they see a battle between a Dark Knight and an Integrity Knight. Seeing the Dark Knight dying after he crashed into the ground near the children, Alice trips over herself while trying to reach the dying Knight to help him, and she falls, her hands brushing the soil of the Dark Territory before Kirito and Eugeo manage to pull her back onto the neutral land. Sacred Arts confirmed that she broke one of the laws in the Taboo Index, and the window disappear before the trio made sense of it.

Scared, Eugeo and Kirito run home, carrying Alice. They sigh in relief when nothing turns up that night. However, at lunch the next day, an Integrity Knight, called Deusolbert Synthesis Seven, arrives, announcing that Alice has broken one of the Taboo Index laws and that he is going to take her to the Central Cathedral to interrogate and execute her. Kirito attempts to rescue her but is stopped by the town people while Eugeo is frozen due to his inability to go against the law, so neither of the boys manage to save her before she is taken away by the Integrity Knight. In the period of two UW days, Alice arrives at the Central Cathedral, where Quinella conducts a «Synthesis Ritual» on her, suppressing the girl's memory and turning her into an absolutely loyal Integrity Knight.

Six UW years later, Eugeo and Kirito save Selka from the goblins, but Eugeo is greatly injured in the process. While Selka transfers Kirito's life into Eugeo's dying body to save him from dying, Alice appears to Kirito and tells him that she is waiting for him at the top of Central Cathedral. Her spirit then runs through Kirito and gives him enough «Life» to save both of the boys.

Alicization Turning
Alice makes an appearance as an Integrity Knight, referring to herself as «Alice Synthesis Thirty». Due to the Synthesis Ritual, she does not recognize them as her childhood friends. She also threatens them by saying that she had permission to decrease their life by 70% when Eugeo tries to touch her. Alice arrests Eugeo and Kirito for breaking the Taboo Index and takes them to the Central Cathedral prison.

Trivia

 * In the original web novel, Alice's name after becoming an Integrity Knight was Alice Synthesis Fifty, which designated her as the fiftieth member to join the Integrity Knights. In the light novel, her name was changed to Alice Synthesis Thirty, thus making her the thirtieth member to join.