Jack Ryan (character) Jack Ryan (character) John Patrick "Jack" Ryan, Sr. is a fictional character created by author Tom Clancy and featured in his Ryanverse novels, which have consistently topped the New York Times best seller list over 30 years. Since Clancy’s death in 2013, four other authors have continued the Ryan franchise and its other connecting series with the approval of the Clancy family estate: Mark Greaney, Grant Blackwood, Mike Maden, and Marc Cameron. The son of a Baltimore police detective and a nurse, Jack Ryan is a former U.S. Marine and stockbroker who became a history teacher at Boston College in
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".