are the primary antagonists in the Attack on Titan series. They are a mysterious race of humanoid giants that appeared roughly 100 years ago (107 years is the most specific number given during Eren Yeager's training) and rapidly exterminated humanity to the point of near-extinction. If put into a calculable perspective, the Titans first appeared in year 743. Their origins, overall numbers, and their physiological workings remain a mystery to humanity at this point in the story.