In Assassin's Creed Rogue, which former Assassin becomes a Templar after a major betrayal?

Shay Patrick Cormac becomes a Templar after leaving the Assassins in Assassin's Creed Rogue.

Shay begins the game as an Assassin operating in the North Atlantic during the eighteenth century. After a mission involving an Isu artifact causes a catastrophic earthquake in Lisbon, he rejects the Brotherhood's willingness to pursue similar artifacts despite the danger. He leaves the Assassins and is later taken in by former Templar Haytham Kenway.

The central feature of Rogue is its change in viewpoint. Shay hunts Assassins and works with Templars, allowing the player to see the Brotherhood's methods from the opposing side. The game also connects directly to earlier titles through characters such as Achilles Davenport, Liam O'Brien, and Adéwalé.

Shay is not Edward Kenway, although both are eighteenth-century protagonists associated with the Atlantic world. Haytham is Shay's Templar mentor, while Liam is Shay's former Assassin friend and fellow Irishman.