In Assassin's Creed Mirage, which Hidden One is the game's central protagonist?

In Assassin's Creed Mirage, Basim Ibn Ishaq is the central protagonist.

Mirage follows Basim before and during his rise within the Hidden Ones in ninth-century Baghdad. The game expands on a character first introduced in Assassin's Creed Valhalla, where Basim appears as a mysterious Hidden One connected to Eivor's story. Mirage serves as a prequel to those events.

Basim begins as a street thief in Anbar and seeks membership in the Hidden Ones. His training takes place under Roshan, a senior Hidden One, and leads him into investigations across Abbasid Baghdad. The game emphasizes stealth, parkour, contracts, and targeted assassinations.

Basim's full name is sometimes shortened to Basim in summaries and game discussions. He is not Eivor, even though the two characters share major storylines across Mirage and Valhalla. The setting also distinguishes Mirage from the medieval Levant of the first game and Renaissance Italy of Ezio's adventures.