Star Trek: TNG’s Marina Sirtis & Counselor Troi Explained

Marina Sirtis plays Counselor Deanna Troi in Star Trek: The Next Generation and Star Trek: Picard. Deanna Troi served as ship’s counselor on the USS Enterprise-D under the command of Captain Jean-Luc Picard (Patrick Stewart). As the ship’s counselor, Troi became the heart of TNG, often helping people find connections and work through their various problems. Although the writers of TNG sometimes seemed unsure of what to do with Deanna as a character, Counselor Troi proved to be a great counselor and an invaluable addition to the crew of the Enterprise-D.