Marina Sirtis
Marina Sirtis

Marina Sirtis played Lieutenant Commander Deanna Troi, the half-human, half-betazoid ship’s counselor. In the last season, she is promoted to the rank of commander, which allowed her to take command of the ship, and also perform bridge duties other than those of a ship’s counselor.

The character’s relationship with first officer Riker was a carry-over from character ideas developed for the planned Phase II TV series. Troi also appeared in later episodes of “Voyager” and in the final episode of “Enterprise”.