Dr. Gordon Wyatt M.D. (portrayed by Stephen Fry) is a psychiatrist trained in forensic psychology.
Gordon Wyatt was assigned to evaluate Agent Seeley Booth in the episode "The Girl in the Gator" after Booth shoots at an ice cream truck due to his subconscious issues over his self-perceived role in the recent death of serial killer Howard Epps. At first, Booth regards his therapy with skepticism but eventually comes to befriend Dr. Wyatt after Wyatt helped him recognize that Epps's death was an accident and affectionately call him "Gordon Gordon", based on Dr. Wyatt's way of introducing himself as "Gordon, Gordon Wyatt". It turned out that Dr. Wyatt's name was actually Gordon Gordon Wyatt. Bones also takes to calling him "Gordon Gordon." According to Booth, Dr. Wyatt is "so English." Dr. Wyatt also became involved in the lives of the "squints" in episode "The Priest in the Churchyard", when Booth asked Brennan to come to therapy with him to work out some partnership problems. Brennan, who has repeatedly shown an aversion to psychology, seems to have taken a liking to Dr. Wyatt because what he says makes sense so much so that she even takes Angela to see him when Angela is unsure of how to respond to Hodgins' request for her to move in with him.
Dr. Wyatt returned in the episode "Mayhem on a Cross" after a time working with Interpol. He points out that Dr. Sweets observations of Booth and Brennan's relationship are off and in turn, points out to Booth and Brennan that Sweets' might be more complex than his chipper demeanor portrays. Dr Wyatt announced his retirement as a forensic psychiatrist and has enrolled in cooking school. He also reveals his past as "Noddy Comet", a glam rock guitarist, who "wore spandex, pancake makeup, and played a guitar shaped like a spaceship".
He also briefly returned in Season 5 when Booth was having trouble with his marksmanship after his recent tumor, during which he learned that Booth was in love with Brennan; unlike Sweets, who speculated that the tumor was the reason for Booth's feelings, Dr. Wyatt did not discourage Booth from feeling this way, but instead suggested that Booth has built up an 'idea' of him and Brennan as a family, suggesting that she accompany him to his marksmanship test as she would enable him to pass by reminding him that he has her to protect.