Wiki informs me that the Greek polly-heads are:
Quote:
Greek mythology
Greek mythology contains a number of multi-headed creatures. Typhon, a vast grisly monster with a hundred heads and a hundred serpents issuing from his thighs, is often described as having several offspring with Echidna, a creature with the body of a serpent but the face of a beautiful woman. Their offspring account for all the major monsters of Greek mythos, including:
* Cerberus – a monstrous three-headed dog that guards the gate to Hades
* Ladon – a sometimes hundred-headed serpentlike dragon that guards the garden of the Hesperides and is overcome by Heracles
* Chimera – sometimes depicted with the heads of a goat and a lion
* The Lernaean Hydra – an ancient nameless serpent-like chthonic water beast that possessed numerous heads
* Orthrus – a two-headed dog owned by Geryon
* The Hecatonchires were giants with fifty heads and one hundred arms. The word "Hecatonchire" means "hundred arms". They were the sons of Gaia, and Uranus.
* Hecate – Greek goddess of the crossroads, who had three heads to guard three-way crossroads
Other accounts state that some of these creatures were the offspring of Phorcys and Ceto. Phorcys is also said to have fathered Scylla, a giant monster with six dogs' heads, which terrorises Odysseus and his crew.