Captain Kirk
James Tiberius Kirk, played by William Shatner, was the leading character in the original Star Trek series and the films based on it. Captain Kirk commanded the starship Enterprise (NCC-1701 and later NCC-1701-A). more...
Kirk's middle initial was R. in his first appearance (the second Star Trek pilot, "Where No Man Has Gone Before"), but T. in every appearance thereafter. The full middle name Tiberius first appeared in the episode Bem from the 1974 animated Star Trek series, and subsequently appeared in the introduction to the Star Trek: The Motion Picture novelization. It was explained that Kirk's grandfather Samuel was fascinated by the Roman emperor Tiberius. The name finally appeared canonically in Star Trek VI: The Undiscovered Country.
Kirk's adventures and tactics are legendary in the Alpha and Beta Quadrants and continue to be cited well into the 24th century. He had a relaxed and confident style of command, but didn't suffer fools gladly. As Captain Benjamin Sisko said later about the iconic commander he had "quite the reputation as a ladies' man". Kirk's record with Starfleet's Department of Temporal Investigations was unrivaled, with seventeen infractions. He ordered the Enterprise into multiple blatant violations of the Prime Directive. Kirk's display, his Cowboy-style and unrepentent force, were not tempered by some of the larger considerations seen in later Captains (of the Enterprise or other starships), but his overwhelming results spoke for themselves. Captain Kirk with Mr. Spock and Dr. McCoy outsmarted, battled, sleuthed, conned, fought, argued, laughed and sang their way to victory without fail. They set the benchmark for future Starships, future crews and future shows.
Read more at Wikipedia.org