The Greeks were fond of introducing monsters of various kinds, many of them derived from eastern sources, into their myths. These monsters of various degrees of strangeness, can be classified according as they take the form of (1) human beings of merely exaggerated size; (2) human beings with some extraordinary feature, such as excess or deficiency of the normal limbs and organs; (3) creatures combining human and animal shapes; (4) creatures combining the shapes of two or more animals.
Class 1 consists of the
Giants as primitively conceived, creatures of human form so huge that after the defeat of their attack on the gods they were buried under islands,
Enceladus for instance under Sicily, and
Polybotes under Cos; while
Tityus in Hades covered nine roods of ground. But in course of time, to differentiate them from gods and heroes, their attributes became more terrific and they passed into classes 2 and 3. Giants, in the traditions of various races, were the personifications of violent forces of nature, such as volcanoes.
Class 2 includes such monsters as the
Hecatoncheires (the Hundred-handed Giants); the three
Graiae, having only one eye and one tooth between them; the
Cyclopes, with a single eye apiece; the
Medusa with her huge and hideous head and petrifying eyes;
Argus, with eyes all over his body.
Class 3 embraces a very large number of monsters: the
Giants, as later represented, with their legs terminating in serpents;
Cecrops and
Erechtheus, whose bodies also terminated in serpents;
Typhoeus, a particularly terrible creature, with a hundred serpents’ heads;
Echidna, with the head and bust of a young woman, the rest a serpent; the Arcadian
Satyrs, goat-footed with horns and tail, and the Anatolian
Satyrs with the ears, feet and tail of a horse. The
Sphinx of the dramatic poets is a winged woman with the body of a dog or lion; she was derived probably not from Egypt, but from Chaldea.
Scylla, a marine monster, had, according to Homer, twelve dangling feet, six long necks and a hideous head on each, with three rows of teeth, the body lying concealed in a cavern. The idea was perhaps derived from some kind of squid. Later she was given a more human form: Virgil describes her as having the body of a young woman, the tail of a dolphin, and a girdle of dogs’ heads. The
Tritons were monsters combining a human body with a fish’s tail. The
Centaurs had a human body, rising from the body and legs of a horse; in primitive representations the front legs are those of a man. The
Minotaur had a human body with the head of a bull... Two types of monster, the
Sirens and the
Harpies, joined a woman’s head to the body of a bird, a widespread fantasy found in fables in all parts of the world. The
Harpies were primitively represented as women with birds’ wings, later as birds with women’s heads.
In class 4 may be included the
Dragons, though the dragon (Gk.
drakon, L.
draco) is not properly a monster at all, but merely a large serpent. It figured frequently as the guardian of shrines (e.g. the
Python at Delphi slain by Apollo), as an attribute of Asclepius, or as a
genius loci. But dragons were sometimes given monstrous peculiarities, such as wings or additional heads. Winged dragons drew the cars [chariots] of Triptolemus and Medea. Fire-breathing dragons are especially a product of Christian art. In the same class we have such monsters as
Cerberus, with his three heads and hair composed of snakes; the
Chimaera, combining the head of a lion, the body of a goat and a tail ending in a serpent’s head; and the
Griffin, part eagle and part lion (see Tenniel’s illustration of the Gryphon in ‘Alice in Wonderland’). The
Griffins were first referred to, we are told, by Hesiod (in a lost passage); according to Herodotus they guarded the gold in Scythia. One of the strangest monsters is the
Hippalectryon: it had the head and forelegs of a horse, and behind these the legs, tail and body of a rooster. There are extant representations of it on two vases by Nicosthenes, and it is mentioned by Aristophanes (Ran. 937-8), from whom we learn that it (as also the
Tragelaphus or goat-stag) was copied from Persian sources. It is not surprising that so inelegant a conception disappeared before long from Greek art and finds no place in Greek myth. The
Hippocampus was a horse with fish-like tail, on which the gods of the sea are often represented riding.
Monsters made little appeal to the Romans. In the comparatively rare cases where monsters figure in their literature (e.g. Scylla in the ‘Aeneid), it is generally in imitation of Greek models.
[From The Oxford Companion to Classical Literature]