Captain Jack Harkness is a fictional character played by John Barrowman in Doctor Who and its spin-off series, Torchwood. He first appeared in the 2005 Doctor Who episode "The Empty Child" and reappeared in the remaining episodes of the 2005 series as a companion of the ninth incarnation of the series' protagonist the Doctor. Jack became the central character in the adult-themed Torchwood, and returned in the 2007 series of Doctor Who, reuniting with the tenth incarnation of the Doctor
Doctor Who 30 Day Challenge: Day 14: Note* I am changing the question from "character you like that everyone else hates" to "Character you don't really care for that everyone else loves." Nothing against this character, really! and I don't hate him... I am just indifferent about him.