James Tiberius Kirk, commonly known as Captain Kirk, is a fictional character in the Star Trek media franchise. Originally played by Canadian actor William Shatner, Kirk first appeared in Star Trek serving aboard the starship USS Enterprise as captain. Kirk leads his crew as they explore new worlds and "boldly go where no man has gone before". Often, the characters of Spock and Leonard "Bones" McCoy act as his logical and emotional sounding boards, respectively. Kirk has also been portrayed in numerous films, books, comics, webisodes, and video games.
https://en.wikipedia.org/wiki/James_T._Kirk