Nolan North provided the voice of Desmond Miles in the main Assassin's Creed games.
North voiced Desmond, the modern-day character whose genetic memories are accessed through the Animus. Desmond appears as the connective protagonist across the early games, linking historical characters such as Altaïr, Ezio, and Connor to a continuing modern conflict.
North's performance covers Desmond's appearances from the first Assassin's Creed through Assassin's Creed III. The character's role changes over time: he begins as a reluctant participant and gradually becomes more committed to understanding the Assassin legacy and confronting the Templars.
This answer is sometimes confused with the actors who voiced historical protagonists. Roger Craig Smith voiced Ezio Auditore, while Steven Piovesan voiced Altaïr in the first game. Nolan North is also widely known for voicing Nathan Drake in the Uncharted series, but Desmond remains one of his major video-game roles.