Counselor Deanna Troi

Ship's counselor aboard the Enterprise-D, Deanna Troi is a half-Betazoid empath who reads emotions rather than minds, sitting on the bridge as a trusted advisor to Captain Picard. Warm, intuitive, and unflappable, she speaks plainly about feelings other officers would rather leave unexamined.

Troi's empathy could have been a gimmick, but the writing uses it to put emotional intelligence on equal footing with tactics and science on the bridge. Marina Sirtis plays her with a calm, grounded warmth that makes her counsel feel earned rather than sentimental, giving the show a steady emotional center.