Captain Jack

Canon Characters

 * Captain Jack Sparrow - captain of the Black Pearl, Pirates of the Caribbean
 * Captain Jack Harkness - leader of Torchwood and one-time companion, Doctor Who and Torchwood

Slain Gary Stus

 * Captain Jack Russel - a Star Trek Stu slain in two parts by Agents Cyba Zero and Eagrus Khan (DTE)

Other

 * You might mean Captain Jack as in a bottle of Jack Daniels whiskey, but we doubt that.