Alice Zuberg, also known as Alice Synthesis Thirty, is one of the main characters in the Alicization Arc and a supporting character in the Unital Ring Arc of Sword Art Online. She is the daughter of Rulid Village's chief, Gasupht Zuberg, and a childhood friend of Eugeo and Kirito. After accidentally violating the Taboo Index as a child, Alice was taken to the Central Cathedral and transformed into an Integrity Knight, with her memories sealed.

Alice's journey is central to the Alicization storyline, as she transitions from an innocent village girl to a powerful Integrity Knight and then to a protector of the Human Empire. Her experiences, which include regaining her memories and finding her place in the world, form a significant part of the narrative.

Personality and Appearance

Alice has long, golden hair tied in braids and adorned with a bow and sparkling blue eyes. As an Integrity Knight, she wears golden armor, a blue cape, white leather boots, and a white (or blue and white) skirt.

Initially determined and hardworking, Alice was also adventurous and slightly mischievous as a child. As an Integrity Knight, her personality became more serious and duty-bound. After regaining her memories, Alice struggles with her identity and purpose, eventually finding renewed determination to protect her world and those she cares about.

Powers and Abilities

Alice is one of the most powerful characters in the Underworld, with abilities that make her a formidable force both as an Integrity Knight and a protector of the Human Empire.

• Master Swordswoman: Exceptional skill with her Fragrant Olive Sword.
• Sacred Arts Proficiency: High-level mastery of the Underworld's magic system.
• Superhuman Strength and Agility: Enhanced physical capabilities as an Integrity Knight.
• Flight: Ability to fly using her sword as a conduit.
• Tactical Acumen: Strong strategic skills in both combat and leadership roles.
• Adaptive Learning: Quick to master new skills and adapt to changing situations.
• Strong Will: Able to overcome system constraints through sheer determination.

Trivia

• Alice's name coincides with the acronym A.L.I.C.E. (Artificial Labile Intelligence Cybernated Existence), which is central to the concept of Project Alicization.
• In the real world, Alice is an android with the exact appearance she has in the Underworld.
• Her birthday was chosen one day apart from Eugeo's as part of Rath's experiment.
• Alice ranked sixth (as Synthesis Thirty) and thirtieth (as Zuberg) in an official character popularity poll.
• Her Integrity Knight name was changed from "Synthesis Fifty" in the web novel to "Synthesis Thirty" in the light novel.
• Alice's journey from a village girl to an Integrity Knight and then to a protector of the Human Empire showcases significant character development throughout the Alicization Arc.