What is the name of the Medjay protagonist in Assassin's Creed Origins?

The Medjay protagonist in Assassin's Creed Origins is Bayek of Siwa.

Bayek is a Medjay, a traditional protector and law enforcer in ancient Egypt. The game follows him and his wife, Aya, as they investigate a conspiracy connected to the death of their son, Khemu. Their investigation leads to the formation of the Hidden Ones, the organization that later becomes the Assassin Brotherhood.

Origins is set during the Ptolemaic period, chiefly in the first century BCE. Its world includes Alexandria, Memphis, Cyrene, the Nile Delta, and desert regions. Historical figures such as Cleopatra and Julius Caesar appear in the story, alongside fictional characters and secret societies.

Bayek is sometimes confused with Aya because both are playable in limited sections and both are central to the plot. Senu, Bayek's eagle, is also important for scouting, but Senu is an animal companion rather than the protagonist. Origins also introduced a role-playing structure with levels, loot, and a large open world.