Starfleet Medical officer assigned to the U.S.S. Enterprise as Chief Surgeon and
head of the Medical Department, holding the rank of Lieutenant Commander while serving
under Captain James Kirk. Leonard McCoy was born in 2227.
McCoy was assigned to the Enterprise in 2266, replacing Dr. Mark Piper. He had a daughter,
Joanna, but is apparently no longer married. ("The Survivor") He is very old
fashioned and idiosyncratic and maintained a constant verbal feud with Mr. Spock, but anyone who
knew the two knew that they were in fact the best of friends. Leonard entered college in
2245, and graduated in 2253 after completing an eight-year
medical program. In 2251, while still in Starfleet Medical
School, McCoy led a mass-innoculation program on Dramia II. Shortly after McCoy's team left,
an Auroral Plague kills almost the entire population of the planet. ("Albatross").
McCoy almost died in 2269 when his life energy was drained by the females of
Taurus II. ("The Lorelei Signal"). On stardate 5499.9 Captain Kirk and Mr. Spock
were mutated into water-breathers by well meaning Aquans on the planet Argo. Doctor McCoy deciphered
the ancient Aquan scrolls and filled n missing information and successfully reversed their mutation.
("The Ambergris Element"). McCoy treated Spock for choriocytosis, a disease that is a mere nuisance to humans but is potentially
fatal to Vulcans. ("The Pirates of Orion").
In 2270, McCoy, Sulu and Uhura became trapped in the holographic recreation room when the ship's
computer began exhibiting aberrant behavior following the ship's passage through an energy cloud.
("The Practical Joker").
On stardate 5275.6, Dr. McCoy was accused and imprisoned by the Dramans for causing a plague on
Dramia II in 2251, but was acquitted after he found a cure to the
The character of Dr. McCoy appeared in all but two episodes of the animated series,
"The Jihad" and "The Slaver Weapon." DeForest Kelley also portrayed Dr. McCoy in the Original Star
Trek Series and movies. McCoy's daughter was to have been introduced in an original series episode,
entitled "Joanna" by D.C. Fontana, but the script was extensively rewritten and became "The Way to Eden." His daughter's age was never given in dialog, although Bjo Trimble's Star Trek Concordance states that she was 20 years old. McCoy's middle initial was given in Star Trek III: The Search for Spock.
There was recently published an authorized biography of the beloved actor entitled From Sawdust to Stardust - The Biography of DeForest Kelley, Star Trek's Dr. McCoy. This book contained some information about the gentle actor's involvement with the animated series. The book indicated that Kelley welcomed the voice acting work, especially since his early career began in radio. So, for Kelley, reading dialogue for animation was child's play, and he really enjoyed himself.