Louis Mills was a deckhand aboard the Providence, which sailed from England to Boston, and a member of the Assassin Order in Assassin's Creed III. Like his father, Mills was in love with the sea and set sail for the first time at the age of 10 with his father.
In 1752, Mills joined the crew of the Providence and stayed with the captain and crew through a variety of hardships. Mills was assigned to assassinate Haytham Kenway during a trip to Boston after Haytham killed Miko at the Royal Opera House.