The protagonist of Assassin's Creed Mirage is Basim Ibn Ishaq. The game follows his journey from a street thief in ninth-century Anbar to a Hidden One operating in Baghdad.
Basim is introduced in Assassin's Creed Valhalla as a major character, but Mirage explores his earlier life. After being recruited by the Hidden Ones, he travels to Baghdad and works against the Order of the Ancients. The story focuses on investigation, parkour, stealth, and targeted assassinations in a more compact city setting.
Mirage is set during the Islamic Golden Age under the Abbasid Caliphate. Its protagonist is sometimes identified only as Basim, especially in summaries of Valhalla, but Ibn Ishaq is the character's full name in Mirage. The title also connects Basim's personal memories with the wider series mythology without making him the creator of the Assassin Brotherhood.