- Greek Mythology
Cerberus was known as “the hound of Hades.” People may also know him by the name “Hellhound” in other mythology or folklore. The dog was multi-headed (3 heads), had a snake for a tale, as well as snakes coming from other parts of its body too. In some stories, the hound is even able to breathe and spew fire. It is eventually captured by Heracles as part of his 12 Labors, which obviously angers his Uncle Hades.
Due to the size of the creature as well as how it appears, it could be released into the world to kill many humans for Hades to take into the Underworld. However, only Cerberus guards the Gates to the Underworld. Capturing him was important for Hercules because it would leave the Gates unguarded and therefore allow anyone to enter. Cerberus was, usually, the only thing stopping people from entering or exiting. His importance alone makes him one of the top monsters in mythology.