Beasts
Hecatoncheires
According to Hesiod, The Hecatoncheires were children of Gaea and Uranus. They were giant creatures. Their name means "hundred - handed ones", and apart from a hundred hands of unfathomable strength, they also had fifty heads.
There were 3 of them:
Briareos = "Strong"
Kottos = "Strike or punch"
Gyges or Gyes = limb or curved
Cyclops
The Cyclopes (singular Cyclops) were the three sons of Uranus and Gaia, the first king of the Titans. They were imprisoned by their father into the underworld, who feared their strength along with their three brothers, who had fifty heads and a hundred hands, also known as Hecatoncheires.
Typhon
Typhon was the most deadly monster of Greek mythology.
The last son of Gaea and fathered by Tartarus.
He was known as the “Father of All Monsters”; his wife Echidna was likewise the “Mother of All Monsters.”
He was described in pseudo-Apollodorus, Bibliotheke, as the largest and most fearsome of all creatures.
His human upper half supposedly reached as high as the stars, and his hands reached east and west.
Instead of a human head, a hundred dragon heads erupted from his neck and shoulders.
Echidna
Half woman half snake, Echidna known as the “Mother of All Monsters” because most of the monsters in Greek mythology were her offspring. Hesiod’s Theogony described her as: “the goddess fierce Echidna who is half a nymph with glancing eyes and fair cheeks, and half again a huge snake, great and awful, with speckled skin, eating raw flesh beneath the secret parts of the holy earth. And there she has a cave deep down under a hollow rock far from the deathless gods and mortal men. There, then, did the gods appoint her a glorious house to dwell in: and she keeps guard in Arima beneath the earth, grim Echidna, a nymph who dies not nor grows old all her days.”
The Cerberus
In Greek mythology, Cerberus (/ˈsɜːrbərəs/; Greek: Κέρβερος Kerberos [ˈkerberos]), often called the "hound of Hades", is a multi-headed dog that guards the gates of the Underworld to prevent the dead from leaving.
The many renderings of Argos or Argus Panoptes
Argus Panoptes or Argos was a hundred-eyed giant in Greek mythology. He was a giant, the son of Arestor, whose name "Panoptes" meant "the all-seeing one". He was a servant of Hera; one of the tasks that were given to him was to slay the fearsome monster Echidna, wife of Typhon, which he successfully completed. However, his main task, at Hera's request, was to guard Io, a nymph that Zeus was involved with. Zeus, in his efforts to approach Io, told Hermes to disguise himself as a shepherd and make Argus go to sleep. As soon as he fell asleep, Hermes killed him with a stone. When Hera discovered Argus' death, she took his eyes and put them in the peacock's feathers.
Argos lies on the fertile Argolid plain in the eastern Peloponnese in Greece. ... In ancient Greek mythology, the city gained its name from Argos, son of Zeus and Niobe. Homer's Iliad tells of Argos sending men to fight in the Trojan War, as being ruled by Agamemnon, and as a place celebrated for its horse rearing.
Griphon (Griffin)
Regarded as king of the creatures, the Griffin, with the body, tail, and back legs of a lion; the head and wings of an eagle; and an eagle’s talons as its front feet. As the lion was traditionally considered the king of the beasts and the eagle was the king of the birds, the griffin was thought to be an especially powerful and majestic creature. In antiquity it was a symbol of divine power and a guardian of the divine.
Sphinx
A mythical creature with the body of a lion and a human head. In Greek tradition, it has the haunches of a lion, the wings of a great bird, and the face of a woman. She is mythicised as treacherous and merciless. Those who cannot answer her riddle suffer a fate typical in such mythological stories, as they are killed and eaten by this ravenous monster.
Chimera
The Chimera was a monstrous fire-breathing female creature of Lycia in Asia Minor who was composed of the parts of three animals; a lion, a snake and a goat. Usually depicted as a lion, with the head of a goat arising from its back, and a tail that ended in a snake’s head, the Chimera was one of the offspring of Typhon and Echidna and a sibling of such monsters as Cerberus and the Lernaean Hydra.
Centaur
Centaurs are half-human, half-horse creatures in Greek mythology. They have the body of a horse and the torso, head and arms of a man. They were considered to be the children of Ixion, king of the Lapiths, and Nephele, a cloud made in the image of Hera.
The major difference between the two is that a Minotaur is half bull, and a Centaur is half horse. Minotaurs are also typically a lot more animal, while centaurs are more human.
Minotaur
Described as “part man and part bull”. The Minotaur was a creature with the head of a bull on the body of a man, and is sometimes depicted with the head and legs of a bull and the upper body of a man.
He dwelt at the center of the Cretan Labyrinth, which was an elaborate maze designed by the architect Daedalus and his son Icarus.
The bull-man was eventually slain by the Athenian hero Theseus.
Lamia
Lamia was the beautiful queen of Libya who became a child-eating daemon. In the myth, she is a mistress of the god Zeus, causing Zeus’ jealous wife, Hera, to kill all of Lamia’s children except for Scylla, who is herself cursed. Hera transforms her into a monster that hunts and devours the children of others. Another version has Hera merely stealing away all of Lamia’s children and it being Lamia herself, losing her mind from grief and despair, who starts stealing and devouring others’ children out of envy, the repeated monstrosity of which transforms her into a monster on its own.
Gargon (Medusa)
A dreadful female creature in Greek mythology. Perhaps the most popular Gorgon is Medusa, generally described as having the face of a hideous human female with living venomous snakes in place of hair. She was the only mortal among the three sisters who’s gaze would turn anyone into stone. She was famously decapitated by Perseus who was armed with a mirror and scythe.
Siren
The dangerous and beautiful creatures in Greek mythology. They were often portrayed as femme fatales who lured nearby sailors with their enchanting voices to shipwreck on the rocky coast of their island. They were considered the daughters of the river god Achelous. Roman writers linked the Sirens more closely to the sea, as daughters of Phorcys. Sirens are found in many Greek stories, particularly in Homer’s Odyssey. Their number is variously reported as between two and five.