Troi appears in all four Next Generation theatrical films, and also made guest appearances on Voyager, Enterprise, Picard, and Lower Decks.
Her romantic interests, family, and personal life are plot elements in many Star Trek: The Next Generation episodes.
Deanna Troi was born on March 29, 2336, near Lake El-Nar, Betazed. Troi’s parents are Betazoid Ambassador Lwaxana Troi (portrayed by Majel Barrett) and deceased human Starfleet officer Lt. Ian Andrew Troi (portrayed by Amick Byram). An older sister, Kestra, died in a drowning accident during Troi’s infancy. Although Deanna Troi has little exposure to Earth culture, she attended Starfleet Academy from 2355 to 2359, as well as the University of Betazed, and earned an advanced degree in psychology.

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