D&D Monsters: Nagas

Nagas originate in Hindu mythology, in which they are magical beings that can take on various snake-like forms. Some appear as literal snakes and, indeed, the scientific name of the main cobra genus is Naja, based on the Sanskrit word for 'cobra'. Similarly, it's no coincidence that the feminine form of this word is "nagini" - although the exact English spelling can vary.

Often capable of shape-shifting, mythic nagas can take on fully human or partially humanoid form, with the latter more usually resembling the yuan-ti and mariliths of D&D than the shape seen in the game (although this is not unknown). Nagas are generally said to be righteous, if not exactly benevolent, and are often set to guard the treasures of the gods, hence at least the 'guardian nagas' of D&D.

D&D Monsters: Sphinxes

The sphinx is a creature of Greek myth, taking the form of a winged lion with a human face. In the original myths, she is, like the minotaur and many others, a unique creature, and appears most famously in the story of Oedipus. 

Confusingly, however, the term was retrospectively employed (possibly by the Greeks themselves) to also refer to the wingless lion-bodied statues of Ancient Egypt. These aren't the same thing as the Greek monster, and it isn't known what the Egyptians actually called them. They were usually, but not always, male and, judging from the statuary, were probably perceived as good and noble beings, unlike the much more hostile Greek creation. 

It seems to be the case that, in D&D, the male or "androsphinx" was based largely on the Egyptian creature (albeit with the addition of wings), while the female or "gynosphinx" has closer links with the Greek version.

D&D Monsters: Lamias

The lamia is another creature originating in Greek myth. However, the route from the myth to the RPG monster is rather more circuitous than is the case for, say, centaurs. In the original myth, Lamia is an otherwise normal woman cursed by the gods into becoming a child-eating cannibal and hence, a sort of bogeyman figure. By Roman times this has shifted to the point that lamias are a race, and the stories around them more closely resemble those of the succubus than of ogres.

At some point between then and medieval times, lamias change again, keeping their powers of sinful seduction, but now becoming part-serpent - physically resembling the yuan-ti of D&D. In fact, outside of gaming, this may remain the most common depiction. In the 17th century, however, an alternative description made them quadrupedal, a scaly hooved creature with a woman's head and breasts. This, combined with a desexualised version of the seduction powers, seems to be the likely inspiration for the game version.

D&D Monsters: Manticores

Manticores are creature not of Greek, but of Persian, myth. The name literally means "man-eater", and it's at least possible that it originated with a "traveller's tale" style exaggeration of man-eating tigers. They were supposed to be hungry for human flesh - something retained in D&D - and were often described as having a "scorpion-like" tail, although most historical illustrations show a cluster of spikes on the end of the tail instead.

When the creature was adopted for D&D, however, Gygax made a major innovation to the mythic creature: he gave it wings. (At least, this is true by the 1E Monster Manual; the original version of the rules apparently doesn't mention the feature). Although this is original to the game, it has become a common trope of manticore pictures since, even outside of D&D, although it's far from universal.

D&D Monsters: Satyrs

Like centaurs, minotaurs, and harpies, satyrs have their origins in Greek myth. The original versions are wild nature spirits and, in particular, representations of unbridled male sexuality... this survives today in the psychological term 'satyriasis' for uncontrollable sexual desire in men. As with centaurs, this part-bestial nature is represented in their physicality, which combines various animal-like features with an otherwise human, masculine, body.

In later times, the Romans conflated satyrs with fauns, nature spirits from their own mythology that were part-goat part-man. This is quite different from how early Greek art shows them as looking, but it has become essentially universal in western lore since. Nonetheless, since "fauns" lack the rampant sexuality of satyrs, it was their name that C.S. Lewis used in the Narnia books, and his fauns were far more pleasant than Greek satyrs were said to be. Otherwise, "satyr" has generally been the more common term in fantasy, and that's the term that D&D uses.

D&D Monsters: Minotaurs

Minotaurs are another creature with their origin in Greek myth. In the original, there was, of course, only one Minotaur, trapped in a labyrinth and slain by Theseus. Contemporary Greek illustrations show a male human with the head and tail of a bull, more obviously a hybrid than the D&D version, but at least broadly similar. However, some of the myths were vague as to exactly what the Minotaur was supposed to look like, and in the Middle Ages an alternative with a centaur-like form, albeit often with horns on the human-like head, started showing up in art. The latter form had some popularity (it was the first illustration of it I saw as a child) but has declined in modern depictions.

Given that crawling around in subterranean labyrinths is part of the point of the original D&D, it's unsurprising that the Minotaur would be included in the game. Here, of course, it becomes a race of beings and thereby loses its capital letter. (As an aside, both "mine-otaur" and "minn-otaur" are legitimate pronunciations in UK English, although the latter seems to be preferred in the US. In Ancient Greek, it was apparently "meen-otaur", so, hey...).

D&D Monsters: Harpies

Harpies are one of a number of D&D monsters that owe their origins to Greek myth. However, the story is not quite as simple as that, since they actually combine two different Greek monsters into a single being: the harpies themselves, and sirens. Both were said to be creatures that were part bird, part woman, but beyond that, there is little similarity between the two in the original sources.

Although very early descriptions of mythic harpies portray them as beautiful, the great majority show them as monstrous. As is often the case, there isn't complete consistency in the descriptions of which parts are avian and which parts humanoid, although something at least resembling the D&D form is the most common. Sirens were even more variable, and some early Greek artwork shows male examples as well as females. In essence, though, it is really only the signature attack - the siren call - that copies over to the D&D 'harpy', which in other respects, is more closely based on its namesake.

D&D Monsters: Centaurs

This series of posts doesn't exactly have a large audience, but I have nothing else to do this morning, so let's turn to a race that's a staple of fantasy in terms of its existence, but that, in my experience, is rarely seen in actual games: the centaur.

Centaurs, of course, originally appear in the myths of Ancient Greece, from whence they were borrowed by the Romans, and, later still, often seen in medieval bestiaries. (Similar creatures do appear in some other mythologies, but the true centaur that we're talking about here is the Greek one). They have regularly appeared in fantasy literature, with the Narnia and Harry Potter series being perhaps the best known examples. In the myths, they are sometimes wild and uncivilised hunters, and sometimes wise and noble teachers, reflecting their dual human/bestial form; novels have tended more towards the 'wise' version.

While the very earliest Greek depictions of centaurs varied somewhat in which bits were human and which bits horse, the classic look that we're familiar with today was already in place by about the 5th century BC, so it has a long pedigree, and unlike, say, goblins, there's strong agreement on what centaurs are supposed to look like. Both the human and horse parts are often said to be physically attractive for their species, and, while female centaurs appear only rarely in myth, they have been reasonably common in artwork even as far back as the Greek period.