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McCoy remains aboard to see the Enterprise defeat Nero and his crew, with Kirk becoming the commanding officer of the ship. He later becomes the chief medical officer after Doctor Puri is killed during an attack by Nero. McCoy later helps get Kirk posted aboard the USS Enterprise. In the 2009 Star Trek film, which takes place in an alternate, parallel reality, McCoy and Kirk become friends at Starfleet Academy, which McCoy joins after a divorce that he says, "left nothing but bones." This line, improvised by Urban, explains how McCoy earned the nickname Bones. Although Chekov's friend Irina in the original series episode " The Way to Eden" was originally written as McCoy's daughter, it was changed before the episode was shot. In the 1973 Star Trek: The Animated Series episode " The Survivor", McCoy mentions he has a daughter, Joanna. The fictional book Comparative Alien Physiology was written by McCoy, and was required reading at the Starfleet Medical Academy through the 2370s. He went on to become chief of Starfleet Medical, with a special rank known as branch admiral. McCoy had attained the rank of admiral in the Trek timeline when this episode was aired, and he is stated to be 137 years of age. Kelley reprised the role for the " Encounter at Farpoint" pilot episode of Star Trek: The Next Generation (1987), insisting upon no more than the minimum Screen Actors Guild payment for his appearance. In Star Trek VI: The Undiscovered Country (1991), McCoy and Kirk escape from a Klingon prison world, and the Enterprise crew stops a plot to prevent peace between the United Federation of Planets and the Klingon Empire. Shortly after the suicide, a cure was found for his father's disease, and McCoy had carried the guilt about it with him until Sybok's intervention. In Star Trek V: The Final Frontier (1989), McCoy (through the intervention of Spock's half-brother Sybok) reveals that he helped his father commit suicide to relieve him of his pain. McCoy continues to serve on Kirk's crew aboard the captured Klingon ship in Star Trek IV: The Voyage Home (1986). This causes mental anguish for McCoy, who in Star Trek III: The Search for Spock (1984) helps restore Spock's katra to his reanimated body. Spock transfers his katra-his knowledge and experience-into McCoy before dying in Star Trek II: The Wrath of Khan (1982). When Kirk orders McCoy's commission reactivated in Star Trek: The Motion Picture (1979) a resentful McCoy complains of being " drafted". In the 2009 Star Trek film reboot, when McCoy first meets Kirk, he complains that his ex-wife took all their shared assets following their divorce: "All I got left is my bones", implying this was the origin of the nickname. The nickname "Bones" – chosen before the character was named – is a play on sawbones, a 19th century epithet for a surgeon. As a physician, he prefers less intrusive treatment and believes in the body's innate recuperative powers. McCoy is suspicious of technology, especially the transporter. McCoy often plays the role of Kirk's conscience, offering a counterpoint to Spock's logic. : 146 The passionate, sometimes cantankerous McCoy frequently argues with Kirk's other confidant, science officer Spock, and occasionally is prejudiced against Spock's Vulcan heritage. McCoy and Kirk are good friends, even "brotherly". In 2266, McCoy was posted as chief medical officer of the USS Enterprise under Captain James T. McCoy later married Natira, the priestess of Yonada, characterized in the episode, " For the World Is Hollow and I Have Touched the Sky". The son of David McCoy, : 257–258 he attended the University of Mississippi and is a divorcé.
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McCoy was born in Atlanta, Georgia, in 2227.
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