A race of giants who had only one eye, in the middle of the forehead. Polyphemus, one of them, was slain by Odysseus.
Cyclops
Hind legs of a lion and the head and wings of an eagle. They drew the chariot of the sun.
Griffin
A serpent with the head and wings of a cock and the tail of a dragon. Its glance killed whatever it encountered.
Basilisk
A humanoid body, but had hoofed feet and horns on its head.
Minotaur
In Norwegian legend, it is a giant sea creature that attacks ships and sailors. Made famous by The Pirates of the Carribean.
Kraken
Hindquarters of a horse and the head and wings of a griffin.
Hippogriff
Half man and half horse - with a man's head, trunk, and arms, and a horse's body and legs. Chiron is the best known example.
Centaur
Female spirit, whose sorrowful wail portends death.
Banshee
A three-headed dog that guards the gates of Hades.
Cerberus
Creature who normally takes the form of a man, but changes into an animal when the moon is full. Although the most commonly known is the werewolf, this term applies to any were-beast.
Lycanthrope
A dragon with two legs and a barbed tail. Often seen on heraldry.
Wyvern
A winged horse of the muses, it was born of the blood of the decapitated Medusa.
Pegasus
A fairy that resembles a tiny old man. If caught, he can reveal a buried crock of gold.
Leprechaun
Writhing serpents for hair, claws of bronze and had the power to turn anyone who looked at them to stone. Medusa was one of them.
Gorgons
A lion's head, a goat's body, and a serpent's tail. Was killed by Bellerophon with the aid of Pegasus.
Chimera
Sea monster with the head and forequarters of a horse and the tail of a dolphin or fish.
Hippocampus