In Assassin's Creed Rogue, Shay Cormac is the Assassin who becomes a Templar and leads the story.
Shay Patrick Cormac begins the game as an Assassin working with the Colonial Brotherhood in the North Atlantic. After a disastrous mission connected to an Isu precursor site, he rejects the Brotherhood's methods and eventually joins the Templars. The game then presents the familiar conflict largely from a Templar-aligned perspective, with Shay hunting former allies.
Rogue is set during the eighteenth century and links its story to Assassin's Creed III and Assassin's Creed IV: Black Flag. Shay commands the Morrigan, a heavily armed ship designed for the game's icy North Atlantic environment. He also encounters figures including Achilles Davenport, Haytham Kenway, and Adewalé.
Liam O'Brien is Shay's former Assassin companion, while Charles Lee is a Templar figure from Assassin's Creed III. Their presence can make the names easy to mix up, but Shay is the game's central character and the one who changes allegiance.