In Assassin's Creed Rogue, the Assassin who becomes a Templar protagonist is Shay Cormac.
Shay Patrick Cormac begins the story as a member of the Colonial Brotherhood. After rejecting a decision that he believes could cause catastrophic loss of life, he breaks with the Assassins and is eventually recruited by the Templars.
The game changes the usual perspective by making the player hunt former Assassin allies. Shay's journey connects directly to Assassin's Creed III and Assassin's Creed IV: Black Flag, with characters and events crossing the broader Kenway-era storyline.
Rogue was released in 2014 alongside Unity. Its setting includes the North Atlantic, the Appalachian River Valley, and New York City, and its naval gameplay builds on systems introduced in Black Flag.