Sköll (One Who Mocks) and Hati (One Who Hates) are the names of two Jötnar (giants) presented in ancient Norse mythology. They are the sons of Fenrir and are constantly chasing Sól and Mani, the Norse gods who embodies the Sun and the Moon. They'll inevitably eat the two gods and this will start Ragnarök, the final battle that will end the world and make it reborn a new. Sköll and Hati are two brother giants in the form of wolves, sons of Fenrir and thus grandsons of Angrboda.