Rubeus Hagrid time. It's unknown if Fang is still alive when Harry's children come to Hogwarts. Fluffy is a giant three-headed dog provided by Hagrid to guard the trapdoor leading to the underground chamber where the Philosopher's Stone was hidden until the end of "Philosopher's Stone". The only known way to get past Fluffy is to lull him to sleep by playing music. Fluffy is based on Cerberus, the three-headed dog from Greek mythology that guards the gates to the underworld. As with Fluffy, Cerberus was lulled to sleep with music by Orpheus. In "Philosopher’s Stone", Harry, Ron, Hermione and Neville accidentally
Greek underworld name. Not much is known about her, but she is an ally of Zeus and lives in the underworld. Eurynomos is one of the daemons of the underworld, who eats off all the flesh of the corpses, leaving only their bones. In the Greek underworld, the souls of the dead still existed but they are insubstantial and they flitted around the underworld with no sense of purpose. The dead within the Homeric underworld lack "menos", or strength, and therefore they cannot influence those on earth. They also lack "phrenes", or wit, and are heedless of what goes on around them