Which Assassin's Creed game stars Shay Cormac, who changes allegiance to the Templars?

Assassin's Creed Rogue stars Shay Cormac, an Assassin who changes allegiance to the Templars.

Shay Patrick Cormac begins the game as a member of the colonial Assassin Brotherhood. After a catastrophic mission and a crisis of faith, he rejects the Brotherhood's methods and joins the Templars. The change gives Rogue its unusual perspective: the player experiences the conflict largely through a protagonist who hunts former Assassin allies.

Rogue is set mainly in the North Atlantic, the River Valley, and New York during the eighteenth century. Its naval gameplay builds on systems from Assassin's Creed IV: Black Flag, while the story connects to Assassin's Creed III and Assassin's Creed Unity. The game also shows how the opposing factions can interpret the same historical conflict differently.

Shay's defection is the key identifying feature of Rogue. He is not a Templar protagonist from the beginning, and Rogue is not simply a renamed version of Black Flag. Its central narrative is specifically about an Assassin's break with the Brotherhood and subsequent service to the Templar Order.