Deanna Troi is the love interest of William T. Riker from Star Trek: The Next Generation, Star Trek Generations, Star Trek First Contact, Star Trek: Insurrection and Star Trek: Nemesis. She is half-Betazoid, half-Human. She first meets Riker during the Farpoint Mission in 2364. They served together on the USS Enterprise-D. She taught Riker how to read her thoughts when she telepathically projected them. The two began a mutual relationship during the mission on the Enterprise-D. She and Riker also asked Picard to exhibit use of the Enterprise's holodecks to a party of Ligonian representatives and Riker would begin dating Troi. Her life was saved by Riker from the extinct Tkon Empire to release the starship from control. Four years after the destruction of the Enterprise-D, she and Riker had their relationship revived during the Enterprise-E's mission to Ba'ku in 2375. In the end, she and Riker were married and Troi became the first officer of the USS Titan.