Though the game later shifts to Connor’s perspective, Haytham remains a major ... Starting as an Assassin recruit in Assassin’s Creed Rogue, Shay becomes disillusioned with their methods ...

Haytham is arguably the most likable villain in the series. It helps that you get to play as him during the opening hours of Assassin's Creed 3, but that isn't the only reason for his likability.