Which Assassin's Creed game introduced the playable character Basim Ibn Ishaq as its protagonist?

Assassin's Creed Mirage introduced Basim Ibn Ishaq as its protagonist.

Mirage follows Basim in ninth-century Baghdad as he develops from a street thief into an Assassin of the Hidden Ones. The story expands on a character first introduced in Assassin's Creed Valhalla, where Basim plays an important supporting role.

The game is designed as a more focused stealth adventure than several of the franchise's large open-world role-playing entries. Its setting centers on Abbasid-era Baghdad and surrounding regions, while its narrative explores Basim's training, relationships, and mysterious visions.

Basim's earlier appearance in Valhalla can make the wording confusing. Valhalla contains Basim, but Eivor is its main playable protagonist. Mirage is the title that gives Basim the lead role and presents his origin story in detail.