"The League of Extraordinary Gentlemen" is a comic book series created by Alan Moore and Kevin O'Neill. It features a team of fictional characters from Victorian literature, including Captain Nemo, Dr. Jekyll/Mr. Hyde, and The Invisible Man. The story revolves around their adventures as they unite to combat various threats to the British Empire. The series was first published in 1999 and has been adapted into a film in 2003. It explores themes of heroism, morality, and the consequences of power, while blending elements of fantasy and science fiction. The characters often grapple with their own identities and pasts.