Deanna Troi was a Starfleet officer living in the 24th century. She worked under the command of Captain Jean-Luc Picard and served as the ship’s counsellor on both the USS Enterprise-D and the USS Enterprise-E. Deanna Troi was half-human, half- Betazoid, which meant she possessed non-human powers. She was capable of extra-sensory empathy and was telepathic. These skills proved an asset to the ship, and she was able to work through some potentially dangerous situations by working out if others were telling the truth or if they were lying. Deanna was married to William T. Riker, another Starfleet officer, and had two children with him; Kestra Troi-Riker and Thaddeus Troi-Riker.