James T. Kirk (alternate reality)/Relationships/Enemies

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|-| Nero=
Nero killed Kirk's father in 2233. Despite this, Kirk was willing to offer assistance to his father's killer when his ship was caught in between a black hole created by the remaining red matter. However, the Romulan refused his assistance and stated that he'd "rather suffer the end of Romulus a thousand times" and "die in agony". Kirk obliged him by completing the destruction of the Narada as it was consumed by the black hole. ()
|-| Khan Noonien Singh=
Under the identity of John Harrison, Khan killed Christopher Pike and other members of Starfleet in 2259, causing Kirk to seek revenge. Eventually capturing Khan, Kirk soon learned of his true identity and the fact that he had aided Admiral Marcus in the building of Starfleet weapons. 
Kirk decided to team up with Khan to stop Marcus, though Khan eventually betrayed Kirk to overtake the USS Vengeance. After Khan killed Marcus and attacked the Enterprise, Kirk sacrificed himself to save the crew. Khan was eventually captured, due to efforts by Spock and Uhura, and put back into suspended animation. Kirk was soon revived using Khan's blood, which was administered to Kirk by McCoy. ()
|-| Alexander Marcus=Despite Marcus's demotion of Kirk, in their early meetings the two had what could have been described as grandfather-grandson relationship. However, after Khan confessed his role in the Admiral's plot to wage war with the Klingons, Kirk began to doubt the Admiral and viewed him as a war criminal. Marcus himself did not have an antagonistic relationship with Kirk until the Captain lied and tried to warp Khan and the Enterprise to Earth, though he later outright admitted that he was going to kill him and the Enterprise's crew from the start of the mission he assigned them to. 
To cover up the conspiracy, Marcus branded Kirk as "having gone rogue" when he attempted to warn Starfleet. Their last meeting occurred when Kirk tried to arrest him for high treason, with the Admiral openly mocking Kirk's naivete. The relationship ended when Khan crushed Marcus' skull in revenge for treating him like a slave. ()
|-| Krall=
In 2263, Balthazar M. Edison, once the commanding officer of the and later known as Krall, attacked the Enterprise, destroying it with the help of his Swarm ships and stranding the crew on Altamid. Krall had been stranded on the planet after his ship went missing in the 2160s and had planned revenge by attacking Starbase Yorktown. Kirk and his crew, with the help of Jaylah, managed to find and repair the Franklin, traveling to Starbase Yorktown and putting a stop to Krall's plans to destroy it. ()
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