Echidna's Minions - Echidna is the Mother of All Monsters
Medusa was once a beautiful women. She was loved by all. But the Goddess Athena was jealous of her beauty. So she turned Medusa into a monster that turned people to stone when someone looked at her in the eyes. Medusa has two sisters. Sthenno and Euryale.
Hydras were a dangerous greek mythological monster that had five heads, and spit out acid. When somebody cut off one of their heads, two more grew back. The hydra was defeated by Hercules, when he shot it down with arrows.
Harpies were a meat eating half bird, half woman. They were pests and dangers to greek farmers, carrying off their food and eating their children and the farmers. They are minions of Hades and are very evil spirits.
Ceberus was the guardian of the underworld. He was a three-headed dog that prevented spirits from escaping the underworld by eating or mauling them. He was Hades's pet.
The Chimera was a deadly monster bred by Echidna. It had the body and head of a lion, the middle half of a goat, and the tail of a snake. It was one of the most dangerous monsters, so many of the heroes died from trying to get rid of it.
The manticore was a very threatening lion creature. It had wings and a tail that shoots out poisonous spikes that kill straight on impact. Manticores are rarely found and can evolve from the manticore into a normal man. They can transfer back and forth.