The Greek underworld is home to some of the most terrifying and powerful mythical creatures. Cerberus, the three-headed dog who guards the gates of Hades, is one of the most infamous beings in Greek mythology. The Furies, vengeful spirits of vengeance, are another terrifying presence, punishing wrongdoers in the afterlife.
Other creatures like the Hydra, a multi-headed serpent that regenerates its heads, and the Minotaur, half-man, half-bull, were also linked to the underworld, embodying fear, death, and chaos. These creatures played key roles in ancient Greek myths, offering challenges to heroes and mortals alike.