Jack Harkness

Captain Jack Harkness is a fictional character from the British science fiction series "Doctor Who" and its spin-off "Torchwood." He is a charismatic and adventurous former military officer who becomes a time traveler and leader dedicated to protecting humanity from extraterrestrial threats. Several centuries old due to a unique, non-deadly condition, Jack is characterized by his bravery, wit, and a complex moral code. His background includes complex relationships, including his sexuality, which is openly portrayed. Overall, he embodies a blend of heroism, resilience, and moral ambiguity set against a backdrop of intergalactic adventure.