"You're an old fashioned boy, McCoy."– James T. Kirk, 2267 ("Space Seed")Admiral Leonard H. McCoy, MD was a male Human Starfleet officer of the 23rd and 24th centuries. He was an accomplished surgeon, physician, psychologist, and exobiologist, and was also considered an expert in space psychology. As chief medical officer, he served aboard the USS Enterprise and USS Enterprise-A for a combined twenty-seven years. (Star Trek: The Original Series; Star Trek II: The Wrath of Khan; Star Trek VI: The Undiscovered Country; TNG: "Encounter at Farpoint"; VOY: "Lifesigns", "Message in a Bottle")
McCoy as he appeared in the Original Series.
Early life[]
Dr. Leonard McCoy was born in Georgia, USA, Earth, in 2227. He was the son of David McCoy. (Star Trek III: The Search for Spock; TAS: "Once Upon a Planet"; TOS: "This Side of Paradise"; TNG: "Encounter at Farpoint"; Star Trek V: The Final Frontier)
McCoy was attending the University of Mississippi during the mid-2240s when he met the joined Trill Emony Dax, who was visiting Earth to judge a gymnastics competition. While Jadzia Dax did not go into detail regarding the exact nature of their relationship, much may be inferred from her statement that "he had the hands of a surgeon". (DS9: "Trials and Tribble-ations")
He began studying medicine in or before 2245. While in medical school, McCoy and his friends used to play practical jokes on each other all the time. For example, they would substitute real drinking glasses with trick drinking glasses, causing the target drinker to spill on their shirt. (TAS: "The Practical Joker", "The Pirates of Orion")