Deanna Troi (alternate)

Deanna Troi is a half-Human, half-Betazoid who most famously served on the USS Enterprise-D, as counselor and adviser to Captain Jean-Luc Picard. As a half-Betazoid, Troi was capable of extra-sensory empathy, but was incapable of reading aliens with brain structures dissimilar to Humans and other Betazoids, such as the Breen and the Ferengi. Like most Betazoids, Troi had telepathic abilities; due to her half-Human heritage, however, the range of her telepathic abilities were limited compared to full-blooded Betazoids, and could usually only read the thoughts of other Betazoids, most notably her mother. Troi's empathic skills made her an important asset to the Enterprise and often came in handy when dealing with hostile races. Since she could usually tell if others were lying, she repeatedly proved herself invaluable in many suspenseful situations. In 2371, Deanna served on USS Voyager (NCC-74656) as as counselor and adviser to Captain Kathryn Janeway and later Captain Jason Tyson after Janeway's death. (Star Trek: Voyager)