James T. Kirk was captain of the USS Enterprise of the mirror universe. Very little is known about Kirk as he acted as this universe's counterpart for the majority of his time in this universe.
Destructive influence[]
Kirk arrived after a transporter malfunction brought him to this universe and sent this universe's Kirk to the mirror Kirk's native realm. Before he departed to his home universe, he convinced Spock to begin a reform. He told Spock that it only takes one person to start a revolution. Spock volunteered to operate the transporter controls so that Kirk and his three accomplices could all return to their native universe. Kirk never returned, and it was almost a century before the next contact with the mirror universe.