Touching nearly every era of Star Trek's illustrious history, Spock's lengthy timeline made him one of the most important characters in the franchise. Spock debuted as the Vulcan first officer of the USS Enterprise in Star Trek: The Original Series, but it was clear from the outset that he was so much more than a simple officer. His legacy grew throughout the Star Trek film series, and he even appeared in Star Trek: The Next Generation as well. Essentially the logical heart of the franchise, Spock's importance was such that he even made an impact on alternate realities as well.
Torn between the conflicted sides of his half-human, half-Vulcan biology, Spock's dedication to logic was often at odds with his human counterparts, and he provided a balance to the overt emotionality of Captain Kirk. Spock was still important after Star Trek: TOS and the movies, and his actions in the canon had a lasting impact on the future of Star Trek. Aside from his loyalty to his commanding officers, Spock was also a brilliant scientific mind and an accomplished diplomat who utilized both sides of his heritage to find solutions to complicated problems. Spock was involved with nearly every major Star Trek event that took place during his lifetime.
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Early Life (2230 - 2250)
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Born on Vulcan in the year 2230, Spock's half-human biology was an immediate source of pain for the young Vulcan, and his father often expressed disappointment in him. The son of famed diplomat Sarek, and human Amanda Grayson, young Spock was betrothed to fellow Vulcan T'Pring. Spock had a mysterious half-brother named Sybok, and flashbacks during Star Trek: Discovery revealed he became the adoptive brother of Michael Burnham after her parents died. Burnham and Spock had a falling out when she attempted to run away, and her insults lead Spock to reject his human half. Further disappointing his father, Spock opted to join Starfleet instead of the Vulcan Expeditionary Group.
In Starfleet Under Captain Pike (2250 - 2265)
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Spock was one of the first Vulcan cadets at Starfleet Academy and conducted himself admirably while in school. He was assigned to the USS Enterprise under Captain Christopher Pike in 2254, where he served for 11 years. Spock rescued Captain Pike during the incident on Talos IV in 2254, and the pair would further bond as seen in Star Trek: Strange New Worlds. In 2257, Spock reunited with Michael Burnham and helped her travel to the 32nd century after discovering the identity of Star Trek's Red Angel to be her mother, Gabrielle. Spock then swore to never mention his sister again, explaining her absence from the canon in the future.
First Officer Under Captain Kirk (2265 - 2269)
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After 11 years of service together, Captain Pike was promoted to Fleet Captain, and command of the Enterprise was passed on to James T. Kirk. Spock was promoted to first officer under Kirk, on top of his duties as science officer, and he began to rise through the ranks to Lieutenant. In 2266, Spock was one of the first Starfleet officers to see a Romulan, though his aesthetic similarities to the war-like race were a source of trouble for him. As a favor to his former Captain Pike, Spock hijacked the Enterprise in 2267 in order to return his severely injured friend to Talos IV.
During a diplomatic mission in 2268, Spock reunited with his father Sarek, and they made up despite Sarek's questionable parenting choices. On the final year of Spock's five-year mission under Captain Kirk, 2269, Spock traveled back in time to his childhood and posed as an estranged cousin in order to save his younger self from disaster while on an expedition, thus fulfilling the time paradox that prevented his elimination from the timeline. Throughout his five-year mission, which was documented in The Original Series and The Animated Series, Spock grew close to Captain Kirk, and his intellectual rival, Dr. Leonard McCoy.
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Departure From Starfleet And Return (2270s)
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Following this five-year mission aboard the Enterprise under Captain Kirk, Spock departed Starfleet and returned to Vulcan to practice the ritual of kolinahr. Spock aimed to eliminate the last vestiges of his human emotion through the ritual, but his two-year journey was interrupted by his premonition of the impending V'ger crisis in 1979's Star Trek: The Motion Picture. Spock rejoined Kirk and the Enterprise to save Earth during the V'ger crisis around 2272, and his contact with the probe taught him the importance of balance between pure logic and emotion. Captain Will Decker's death opened the door for Admiral Kirk to once again command the Enterprise for another five-year mission.
Captaincy, Death, And Resurrection (2285)
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The 2270s saw Spock rejoin Admiral Kirk on another five-year mission of which little is known. At that mission's completion, Spock made Captain and was given command of the Enterprise to train cadets. In 2285, the Enterprise was dispatched to deal with the return of Khan in 1982's Star Trek II: The Wrath of Khan, and Spock ceded command to Kirk. Spock was young when he died the first time, and he sacrificed himself to prevent a warp core breach. Spock passed his soul to Dr. McCoy before dying, and in 1984's Star Trek III: The Search for Spock, it was reunited with his resurrected body on the Genesis planet.
Final Missions Aboard The Enterprise (2286 - 2293)
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Following the resurrection of his body in 2285, Spock joined his fellow Enterprise crew in 1986's Star Trek IV: The Voyage Home as they traveled back to 1986 in order to bring whales back to the future to satiate a destructive probe. Spock still struggled with the effects of his soul separation but was able to rediscover the important bonds he had formed with Kirk, McCoy, and others. After their successful return to Earth, the Enterprise crew was formally reprimanded for their actions while rescuing Spock, and the Vulcan joined the newly demoted Captain Kirk on the brand-new USS Enterprise-A.
Though the Enterprise-A was meant as a punishment for Kirk, a fresh commission gave the officer a new lease on life after riding a desk as admiral. In 2287, shown in 1989's Star Trek V: The Final Frontier, Spock's estranged brother Sybok hijacked the Enterprise and commanded it toward the heart of the galaxy where he expected to meet the Vulcan deity of Sha Ka Ree. The supposed god was merely a being trapped on the planet, and Spock rescued Captain Kirk from its wrath after Sybok was killed. In 2293, Spock untangled the conspiracy that killed Klingon Chancellor Gorkon, and he prevented the assassination of the Federation president.
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Diplomatic Career (2293 - 2369)
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During the events of 2293's Praxis disaster in 1993's Star Trek VI: The Undiscovered Country, Spock was made a special diplomatic envoy, which explained his presence on the Enterprise to unravel the conspiracy. Following his successful prevention of the assassination of the sitting Federation President, Spock played a pivotal role in the Khitomer Conference which was the foundation of peace between the Klingons and the Federation for well over a century. Also at that conference, Spock planted the first seeds of his unification plan between the Romulans and Vulcans and made major steps towards peace with another of the Federation's long-standing enemies.
Decades later in 2368, Spock embarked on a rogue mission inside Romulan space in order to enact his ambitious unification ideas. As documented in Star Trek: The Next Generation, Captain Jean-Luc Picard of the USS Enterprise-D was dispatched to follow the Vulcan into Romulan territory, and together they came close to seeing Spock's plan come to light. When Spock and Picard met they formed a bond over their complicated relationships with Ambassador Sarek, and Spock learned of his father's passing. Spock would return again in 2369, and he was directly involved with an unauthorized Romulan defection plot that involved kidnapping Counselor Deanna Troi.
Alternate Timeline And Final Death (2387 & 2258 - 2263)
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In the year 2387, Romulus' star threatened to go supernova which lead to Spock devising a plan that involved creating a black hole to destroy the star before it exploded. Spock was unsuccessful in his attempt and the star wiped out Romulus and several other planets in the process. The black hole that Spock created drew in the aged Vulcan and a Romulan captain named Nero, and Spock found himself in an alternate version of 2258. Nero's arrival in the past caused Star Trek's Kelvin Timeline to be formed in 2009's Star Trek, and he destroyed the Kelvin version of Vulcan as a measure of revenge.
Spock joined the alternate crew of the Enterprise, including his mirror counterpart, and helped thwart Nero's plans. Afterward, he chose to remain in the Kelvin timeline for the rest of his days. Spock lived until the Kelvin year of 2263, and he passed away at the age of 161 from natural causes during the events of 2016's Star Trek Beyond. Though he disappeared from the Prime Star Trek universe in 2387, Spock's legacy was already firmly cemented in the annals of Alpha Quadrant history, and the important things he accomplished in his life continued to have an effect well into the ensuing centuries.
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