Tuvok

Tuvok is the Vulcan Chief of Security on board the USS Voyager. Over the course of Voyager's journey home, Tuvok helped in defending the ship against hostiles and he showed initial mistrust towards Neelix for that reason. Despite being a Vulcan, Tuvok does show some degree of emotion under certain circumstances, as he shows deep concern for his fellow crewmates and, as security officer, he sometimes has to resort to anger to make his threats heard.

Tuvok has a habit of blindly following Kathryn Janeway into dangerous situations, often ignoring her reckless abandon and rarely questioning her decisions. it is a wonder that Voyager made it back in one piece.