- For other uses, see Spock.
All aspects of her life paralleled those of Spock, including her 23rd century Starfleet service aboard the Federation starship USS Enterprise as first officer and science officer during the 2260s decade as well as being in a relationship with Communications Officer Nnamdi Uhuro.
On stardate 2261.274, the Enterprise was performing a cultural survey of planet Kassen V, when Kirk overrode Spock's concerns and made an effort to end slavery between the two species of Kassen natives. Upon beaming back to the Enterprise, Spock feared a native child may have seen the Starfleet officers but did not submit a report to Starfleet in an absence of hard evidence. En route to the Campor system, Spock spoke with Uhuro and failed to grasp his analogies. Upon arrival at the system, Spock briefed Kirk on the properties of the quantum storm before the command staff was called back to the bridge. After being pulled into the storm, the Enterprise came face to face with another Constitution class vessel that turned out to be another version of itself but crewed by members of the opposite sex. (TOS - Parallel Lives comic: "Part 1")
Spock explained to her captain the possibility that they were witnessing an alternate reality before a delegation from the alternate ship came aboard and Spock compared her similarities with her male counterpart. As the two discussed the anomaly, James T. Kirk called his crew members back to their ship before the anomaly briefly caused the appearance of Klingons who crewed the Enterprise in their reality. Spock then wished her counterpart good fortune as he and Nyota Uhura ran back to their shuttle. (TOS - Parallel Lives comic: "Part 2")
Analyzing the readings, Spock deduced they were caught in another quantum rift before they were hailed by James T. Kirk now in command of the USS Endeavour. The quantum energy then surged, beaming several crew members off the ship. (TOS - IDIC comic: "Part 2")
Spock found herself with an alternate version of her captain and an operations officer, pitted against a Borg threat. Despite the odds, the three were successful in vanquishing their foes. (TOS - IDIC comic: "Part 5")
In another permutation of the timeline, Spock served under a male version of Captain Kirk. When the captain sacrificed himself to save the Enterprise, Spock ascended to the captaincy. Years later her ship encountered a quantum storm where Spock was beamed off the ship and onto Risa. Making the acquaintance of a gaseous Montgomery Scott, a botanical Kirk and Nnamdi Uhuro, Spock took command so as to determine passage back to everyone's respective realities. Upon finding natives however, the men allowed themselves to be courted in spite of Spock's attempts to remind them of the seriousness of the situation. (TOS - IDIC comic: "Part 3")
She eventually managed to construct a communicator to try and contact the native Starfleet in the hopes of finding a solution to their predicament. Nnamdi Uhuro and Scott then returned with the news that Kirk was completely enthralled by the native women and would be of no help. (TOS - IDIC comic: "Part 4")
As part of his plan to defeat Gary Mitchell, James Kirk placed Spock on an alternate version of the Narada where she killed both Valas and Nero before assuming control of the ship and beaming aboard a male version of herself alongside Nyota Uhura. The three joined Kirk's fleet and, upon his surrendering his powers, opened fire on him. Unwilling to accept defeat, Mitchell undid everything, sending Spock back to her native reality. (TOS - IDIC comic: "Part 6")