Alice Zuberg (アリス・ツーベルク, Arisu Tsūberuku?) is one of the main characters in the Alicization Arc. She is the daughter of Rulid Village's chief Gasupht Zuberg, as well as the childhood friend of Eugeo and Kirito. Due to accidentally breaking a clause of the Taboo Index in her childhood, Alice was apprehended by Deusolbert Synthesis Seven and taken to the Central Cathedral, where she was forced to become an Integrity Knight, named Alice Synthesis Thirty (アリス・シンセシス・サーティ, Arisu Shinseshisu Sāti?), with her memories sealed.