Anime characters who have dark backstories aren't anything new, but these origins almost crossed the line and somehow escaped ...

New or old, benevolent or evil, colossal or tiny, these monsters each have their own unique ... but these creatures also hold deep, dark historical, and existential secrets to mankind itself.

Dark endings aren't surprising in some anime. Some series take unexpected dark turns at the end. Shows like Magikano and Blood-C feature sudden dark twists. Not all anime end with the protagonists ...