Patriarchal Olympian Dominance
Perseus’s subsequent trials and triumphs, like those of his great-grandson Herakles, are too epic in scope, covering most of the known world, Hell included, and too teeming with exploits to go into in any detail here. Most significant, however, was the way in which the deeds of both heroes were reflections of their father’s battles against Gaia—which is to say, of the Greeks’ ongoing struggle to subsume the Pelasgians’ old, earthbound, chthonic cults into the brave new world of patriarchal Olympian dominance. Thus, Perseus’s most renowned exploit would be his beheading of that superbly demonized version of the Great Mother, Medusa, the terrible, snake-haired Gorgon who dwelled with her equally hideous sisters in a seaside cave near the opening to the Underworld.
— Zeus, p. 123