Spock: Science officer aboard the original Starship Enterprise under the command of Captain James T. Kirk. Born 2230 on planet Vulcan. His mother, Amanda Grayson, was a human school teacher from earth, and his father, Sarek, was a diplomat from Vulcan. As a result, he was torn between two worlds, the stern discipline of Vulcan logic and the emotionalism of his human side. The struggle to reconcile his two halves would torment him for much of his life. Spock's starfleet service number was S179-276SP. As of 2267, he had earned the Vulcanian Scientific Legion of Honor, had been twice decorated by Starfleet Command and held an A7 computer expert classification. His blood type was T-negative.

Childhood and Family: When he was five years old, Spock came home upset because Vulcan boys had tormented him, saying he wasn't really Vulcan. As a child, Spock had a pet sehlat, sort of a Vulcan teddybear. Spock was raised with an older half-brother, Sybok, until Sybok was ostracized from Vulcan society because he rejected the Vulcan dogma of pure logic. Spock himself endured considerable anti-human prejudice on the part of many Vulcans, an experience that may have later made it easier for Spock to find a home in the interstellar community of Starfleet. At age seven, Spock was telepathically bonded with a young Vulcan girl named T'Ping. Less than marriage, but more than a betrothal, the telepathic touch would draw the two together when the time was right after both became of age. Spock experienced Pon Farr, the powerful mating drive, in 2267, when he was compelled to return to Vulcan to claim T'Ping as his wife. T'Ping spurned Spock in favor of Stonn, freeing Spock. Spock's father, Sarek, had hoped his son would attend the Vulcan Science Academy, and was bitterly disappointed when Spock instead chose to join Starfleet. Spock and his father had not spoken as father and son for 18 years until a medical emergency drew them together.

Aboard the U.S.S. Enterprise: Spock was the first Vulcan to enlist in the Federation Starfleet, and distinguished himself greatly as science officer aboard the original U.S.S. Enterprise. His logical Vulcan thought-patterns proved of tremendous value when Spock first served aboard the Enterprise during the command of Captain Christopher Pike. Spock said he worked with Pike for 11 years 4 months, which suggests he was young enough when he came on board the Enterprise that he was probably still attending the Starfleet Academy. Because of this, we speculate that Spock's first year on the Enterprise was as a cadet. Under the command of James T. Kirk, Spock suffered infection by parasites on planet Deneva in 2267, an intensely painful experience. He survived the Denevan neural parasites after being exposed to intense electromagnetic radiation that drove the parasite from his body. Spock was briefly feared to have been blinded by the light, but it was later learned that his Vulcan inner eyelid had protected his vision. Spock was critically wounded on Tyree's planet in 2267 with an ancient weapon known as a flintlock. He survived using a Vulcan healing technique in which the mind concentrates on the injured organs. Following the conclusion of Kirk's five year mission, Spock retired from Starfleet, returning to Vulcan to pursue the Kolinahr discipline. Although he completed the training intended to purge all remaining emotion, Spock nonetheless failed to achieve Kolinahr because his emotions were stirred by the V'Ger entity in 2271. Spock subsequently remained with Starfleet and was eventually promoted to Enterprise Captain when that ship was assigned as a training vessel at Starfleet Academy.

Death and Rebirth: Spock was killed in 2285 while saving the Enterprise from the detonation of the Genesis Device by Khan Noonien Singh. His body was consigned to space, but unknown to anyone at the time, his casket landed on the Genesis Planet. Although believed dead at the time, Spock had, just prior to his death, mind-melded with McCoy. Spock had apparently intended for his friend to return Spock's katra to Vulcan in accordance with Vulcan custom. The presence of Spock's living spirit in McCoy's mind was later found to be an extrodinary opportunity to reunite Spock's body and spirit when his body was found to have been regenerated on the Genesis Planet. The Fal-tor-pan (refusion) process was conducted on Mount Seleya on Vulcan, supervised by high priestess T'Lar. Later, Spock underwent several months of reeducation, during which his mind was instructed in the Vulcan way, but his mother, Amanda, was concerned that he regain knowledge of his human heritage as well. Spock elected to return to earth with his shipmates from the Enterprise to face charges stemming from Kirk's violation of Starfleet regulations in Spock's rescue.

Later Career: In later years, Spock's work became more diplomatic than scientific, even while he was still part of Starfleet. At the request of Ambassador Sarek, Spock served as Federation special envoy to the Klingon government in 2293, paving the way for the Khitomer peace accords with Chancellor Azetbur. In 2368, Spock secretly travelled to Romulus, on a personal mission to further the cause of Romulan/Vulcan reunification. Spock's disappearance caused great consternation among federation authorities, and the Enterprise-D was dispatched to determine his whereabouts and intentions. Spock's contact on Romulus was Senator Pardek, who was believed to have met Spock during the Khitomer conference in 2293. Pardek was later learned to be an agent of the conservative Romulan government, seeking to use Spock's initiative to cover an attempted Romulan invasion of Vulcan. Following the attempted invasion, Spock chose to remain underground on Romulus in hopes of furthering the cause of reunification. Spock continued his activities in the Romulan underground, and in 2369 helped arrange the defection of Romulan vice-proconsul M'Ret to the federation. Spock indicated he believed the escape of M'Ret would help establish an escape route for other Romulan dissidents who lived in fear for their lives. Following the death of his father, Spock had one final, unexpected encounter with Sarek. Prior to his death, Sarek had mind-melded with Jean Luc Picard, sharing with Picard his deepest emotions, unclouded by Vulcan logic. On Romulus, Picard allowed Spock to mind-meld with him, and Spock finally came to know of his father's love for him.

As far as we know, Spock remained on Romulus. In "Sarek", Jean Luc Picard noted that he had, years ago as a young lieutenant, attended the wedding of Sarek's son. Gene Rodenberry said he thought Picard was probably talking about Spock, but there is no direct evidence that Spock ever married. Picard did mention in "Unification Pt. 1" that he had met Spock once before the episode, possibly at Spock's wedding? Spock's first appearance was in "The Cage", the first pilot for the original Star Trek series. Leonard Nimoy, under the pseudonym "Frank Force", provided the computer voice heard in the Excelsior elevator in Star Trek III. Nimoy's former assistant, Theresa E. Victor, played several roles in the Star Trek movies including a bridge voice in Star Trek II, the Enterprise computer voice in Star Trek III, and an usher in the Federation Council in Star Trek IV.