Dorohedoro (ドロヘドロ) is a Japanese manga series written and illustrated by Q Hayashida. It was serialized in Shogakukan's manga magazines Monthly Ikki, Hibana, and Monthly Shōnen Sunday ; its chapters were collected in 23 tankōbon volumes. Dorohedoro tells the story of the amnesiac reptilian-headed Caiman, working together with his friend Nikaido to recover his memories and survive in a strange and violent world.