Creatures:

Argus: He was a hundred-eyed herdsman whom was earth-born. Hera ordered him to watch over Io, because she had been turned into a cow for having an affair with Zeus. Zeus sent Hermes to kill Argus. After putting him to sleep with the flute, Argus was crushed by a boulder. Hera honored him by having his eyes put into the feathers of the peacock.

Centaur: The first were conceived with a herd of Magnesian mares. The babies were born with the bodies of a horse and the torso and the head of a human. Most were unruly, being known for fighting and rapes, along with other bad things. One Centaur, known as Cheiron, was acknowledged for his goodness and wisdom. He taught many youth, who later went on to be good people and accomplish great things.

Cerberus: He was a three-headed, dragon-tailed dog who had serpents on his heads, neck, and back. Cerberus also has venom dripping from his fangs. He guarded the entrance to Hades. He allowed all spirits to enter Hades, banned all humans from entering, and didn't allow the dead to leave. Very few heroes got past him. He devoured the souls trying to leave.

Cyclops: A race of giants that had only one eye, in the center of their foreheads. They worked fashioning thunderbolts. The most famous Cyclops is Polyphemus, whom is known for being blinded by Odysseus.

Furies: They were three sisters. The Furies were also known as the goddesses of punishment. They were merciless and carried whips with spikes on them to punish people. They spit and smelled like rotting blood, and they had burning eyes. They put a spell on the people who killed children to either make them go mad or die of persecution.

Gorgons: Daughters of Ceto and Phorcys. Their names are Stheino, Euryale, and Medusa, meaning "strength", "wide-leaping" and "queen". All were quite beautiful, but Medusa was the youngest and most beautiful. Athene punished Medusa for sleeping with Poseidon in one of her temples. Her locks of hair were turned into snakes. The three were transformed into hideous winged monsters with grotesque features, brazen claws, and snakes as hair. A look from them would turn a man into stone. Their blood will bring the dead back to life or kill the living.

Harpies: Spirits of mischief. They were disgusting and mean creatures being half-bird and half-woman. They often caught and tormented wrong doers for Hera. They stole everything, even children and weaklings.

Hydra: He was a monstrous creature with the body of a dog and eight venom breathing heads, one of which was immortal. He lived in a swamp.

Pegasus: A winged horse born from the blood of Medusa after her head was cut off, and the father, Poseidon. Pegasus was captured by Bellerophon to aid in the attack of the Chimaera. Once Bellerophon had killed the Chimaeras, he tried to ride Pegasus to Olympus. He didn't make it and fell to the earth. Pegasus did make it, and was captured by Zeus to carry his thunderbolts. Pegasus is kept in the stalls in Olympus.

Satyrs: The Satyrs had the torso and head of a human, and the lower body of a goat. They were creatures that had large and good appetites and were noisy merrymakers. Most of them are seen in stories pursuing and almost violating maidens. Most the time the maidens were rescued, only to have the same things done by their hero that the Satyrs were trying to do.

Siren: The Sirens had the faces of beautiful women and the feet and feathers of birds. They were flightless because their feathers had been plucked to make crowns for the Muses after losing a contest. Their voices lured passing sailors to their death on their island. The shoreline of this island is covered with bones. After failing to lure Odysseus and his men to their death, the Sirens committed suicide.

Sphinx: She was a beast with the head of a woman, the body of a lion, the tale of a serpent, and the wings of an eagle. She is most remembered for the riddle given to her by the Muses: "What creature has only one voice walks sometimes on four, sometimes on three, and sometimes on two, and is weakest when it walks on four?" She often sat perched on Mount Phicium, asking each passing person the riddle. If they answered her wrong, she ate them. The Sphinx leaped to her death whenever she asked Oedipus and he gave the correct answer-Man