Nine the Phantom (ナイン＝ザ＝ファントム, Nain za Fantomu), born Konoe Ayatsuki Mercury (コノエ＝アヤツキ＝マーキュリー, Konoe Ayatsuki Mākyurī), more commonly known as Nine (ナイン, Nain), and historically known as the Great Magister Nine (大魔道士ナイン, Dai Madōshi Nain), was one of the Six Heroes, the creator of Ars Magus, the Nox Nyctores and a hailed figure across the world. She was the older sister of Celica A. Mercury, wife to Jubei and mother of Kokonoe. Nine was known for her incredible talent with both magic and sorcery which she used in great efforts to keep her family safe. Nine, as "Me" ("わたし"), is one of the main protagonists of XBlaze Lost: Memories and first appeared as Phantom (ファントム, Fantomu) in BlazBlue: Continuum Shift. Nine was finally made playable in BlazBlue: Central Fiction where she is the final boss of Arcade's Act I. Her Phase Shift appearance was revealed as a playable character for BlazBlue Alternative: Dark War on the 23rd of June, 2021.