A xenopsychologist by trade, Petty Officer 2nd Class (Dr.) Reiko Onami, Ph.D. was a Human Starfleet enlisted crewman who served aboard the USS Enterprise in the 2270s as a member of the medical staff. She was recruited by Captain Willard Decker to serve as a counselor for the ship's multi-species crew. (TOS novel: Ex Machina, TOS movie, novelization & comic adaptation: The Motion Picture)