Pegasus

The son of Medusa and Poseidon, Pegasus was birthed from the blood of his mother's decapitation. Although closely related to many of ancient Greece's most vile monsters, Pegasus was largely non-aggressive. In fact he aided the hero Bellerophon in slaying his own cousin the Chimera.



Chrysaor

'Birthed' from the neck of his decapitated mother Medusa, Chrysaor went on to become king of Iberia (the peninsula containing Andorra, Gibraltar, Spain and Portugal) and fathered the three-bodied Geryon. Chrysaor himself (and his brother Pegasus) was fathered by Poseidon.



Callirrhoe

Callirrhoe was one of the 3000 Oceanids, female spirits of the world's water sources. She married King Chrysaor and was the mother of the three-bodied giant Geryon. Some sources claim she was also a lover of Poseidon... which is kinda awkward as he is Chrysaor's father.



Geryon

Geryon was a three-bodied giant who lived on the "sunset" island of Erytheia, where he raised a heard of red cattle with the help of his two-headed dog Orthrus and a (seemingly normal human) herdsman named Eurytion. All three (or was that six?) met their ends when Hercules was sent to retrieve the cattle as one of his legendary labors.



Minotaur

The product of an unholy union between Queen Pasiphae and the Cretan Bull -- a bull which King Minos (Pasiphae's husband) was meant to sacrifice to Poseidon. Minos found the bull too beautiful to kill and kept it for himself and offered a normal bull in return. Enraged, Poseidon punished Minos by making his wife Pasiphae lust for the Cretan Bull, resulting in a savage child that was half bull and half man.

The Minotaur was sealed inside the Labyrinth, and every few years the city of Athens (having lost a war against Minos) had to give 14 youths to feed the beast. Eventually both monster and maze were defeated by the hero Theseus with the help of Minos' daughter Ariadne.



Harpy

These bird-woman monsters were sent by the gods to punish King Phineus for telling other mortals the future. The Harpies didn't physically assault Phineus, rather they prevented him from ever eating, either by stealing the food for themselves or by crapping all over it. The Harpies were eventually driven away -- though not killed -- by the Argonauts.