Leonard McCoy (alternate reality)

Leonard McCoy was a Starfleet doctor. As of 2258, McCoy was chief medical officer of the USS Enterprise.

Family
Leonard H. McCoy, the son of David Andrew McCoy and Eleanora McCoy, was born in Atlanta, Georgia, United States of America, Earth on 20th January 2227. His grandfather, Thomas Jackson "T.J." McCoy, M.D., was the Chief of Medicine at Emory University Medical Center in Atlanta in the 2220s.

Early life
In 2231, at the age of four, Leonard accompanied his father on a trip to Aberdeen, where he briefly met young Montgomery Scott.

By 2255, McCoy was a medical doctor and was divorced from his wife. He decided to enter Starfleet Academy, and boarded a shuttlecraft at the Riverside Shipyard in Iowa, where he met James T. Kirk for the first time.

At some point McCoy had a relationship with Dr. Elizabeth Dehner which ended badly. Dehner would later cancel a transfer onto the Enterprise because she had still not forgiven McCoy.

Starfleet Academy (2255-2258)
In summer 2255, McCoy was attending Starfleet Medical College when he was swept into the search for the serial killer known as the Doctor. McCoy treated Academy Cadets Gaila and Nyota Uhura after each was attacked by the Doctor. In collaboration with several other scientists, McCoy determined that the Doctor was using a swarm of extremely powerful nanites to remove victims' internal organs without leaving incisions. McCoy, Uhura and Dr. Patricia Park discovered that the Transamerica Pyramid was the Doctor's hideout. McCoy, Kirk and Uhura headed for the skyscraper, McCoy outfitting Kirk with weapons designed to combat the nanites. Kirk and McCoy entered the building's spire and fought through the nanites to find the hooded Doctor and four similar figures, all of whom proved to be coalesced swarms of nanites. McCoy and Kirk were nearly killed, but the nanites retreated and left Earth. At this time McCoy had already formed a close friendship with Kirk, who had begun calling him "Bones".

In 2258, McCoy participated in Kirk's third Kobayashi Maru test, on which Kirk cheated in order to win. McCoy attended Kirk's disciplinary hearing, at which they both met Commander Spock for the first time. It was reported that Vulcan had sent a distress call, and many of the cadets were called into action, including McCoy, Spock, and Uhura. As he was under academic suspension, Kirk was not given an assignment, but McCoy injected him with a vaccine in order to give him the appearance of a disease and transfer him aboard the USS Enterprise under his medical care. The Enterprise reached Vulcan only to be attacked by Nero and the Narada, which had already destroyed the rest of the fleet. When Dr. Puri was killed in the Narada's initial attack, McCoy became Chief Medical Officer.

Spock took command of the Enterprise in the absence of Captain Christopher Pike and was forced to throw Kirk off the ship for insubordination, marooning him on Delta Vega. Spock acknowledged how difficult it must have been for McCoy to support him against his friend Kirk. McCoy opined that Spock was out of his mind to maroon Kirk; he was certain Kirk would triumph in the end. After Nero's defeat, McCoy was permanently assigned as chief medical officer of the Enterprise.

Aboard the Enterprise
Months after the destruction of Vulcan, the Enterprise set out on a mission to the edge of the Milky Way Galaxy. When the ship encountered the force field at the edge of the galaxy, Kirk's Academy friend Lieutenant Gary Mitchell was mutated into a superhuman being. McCoy monitored Mitchell in Sickbay as the young officer's behavior became increasingly erratic; at one point he shoved McCoy across the room when the doctor recommended that Mitchell rest. Refusing to be stranded on Delta Vega I, Mitchell blasted Kirk with energy from his hands but was knocked out by McCoy with a sedative. Kirk was subsequently forced to kill Mitchell.