fictional character created by Tom Clancy
John T. Clark (real name John Terence Kelly) is a fictional character created by Tom Clancy. Clark is Clancy’s second most famous character after Jack Ryan, and has been featured in many of his Ryanverse novels. Although he first appeared in The Cardinal of the Kremlin (1987), his origin story was detailed in Without Remorse (1993).
Clark has been described by his creator as "Ryan’s dark side" and "more inclined to take physical action than Jack is." A former Navy SEAL, he became an operations officer for the Central Intelligence Agency, and at one point served as Ryan’s driver and bodyguard. During Ryan's first term as president of the United States, Clark served as director of a multinational counter-terrorism unit code-named Rainbow, which is composed of elite soldiers from countries part of the North Atlantic Treaty Organization. After retiring from CIA and Rainbow, he then worked for The Campus, an off-the-books intelligence organization created by President Ryan, later acquiring a higher position as director of operations.
On the big screen, Clark has been portrayed by Willem Dafoe and Liev Schreiber. Michael B. Jordan is slated to be the latest to play the character in his own film series, which will include adaptations of Without Remorse and Rainbow Six. Clark has also appeared in the Rainbow Six series of video games.
Read more or edit on Wikipedia