John Clark (Tom Clancy character) John Clark (Tom Clancy character) John T. Clark (real name John Terrence 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
Jack Harkness Jack Harkness Captain Jack Harkness is a fictional character played by John Barrowman in "Doctor Who" and its spin-off series, "Torchwood". The character first appears in the 2005 "Doctor Who" episode "The Empty Child" and subsequently features in the remaining episodes of the 2005 series as a companion to the series' protagonist, the Doctor. Subsequent to this, Jack became the central character in the adult-themed "Torchwood", which aired from 2006 to 2011. Barrowman also reprised the role for guest appearances in "Doctor Who" in its 2007 series and 2008 series, as well as the two-part special "The End of Time".