Chakotay

Chakotay was the captain of an anti-Cardassian terrorist ship that was infiltrated by Tuvok, the Vulcan Security Chief on board the USS Voyager. Chakotay and his crew were pulled alongside Voyager into the far reaches of the Delta Quadrant, and after sacrificing his ship to save Voyager, Chakotay and his crew decided to unify with the crew of Voyager and make the journey home together.

A close personal friend of Kathryn Janeway, Chakotay was given the position of First Officer to symbolise the unification between the two crews during the journey home. Chakotay was the one who recommended B'Elanna Torres as Chief Engineer, as she was also one of his crew. Chakotay proved to be a responsible First Officer who was loyal to Janeway and carried out her orders effectively.