|Shadow Hearts: Covenant|
Otherworldly snake that swallowed a pregnant woman whole and absorbed the fetus into himself. The human half is in agony and screams constantly.
Echidna ("She-viper") is a Greek monster that resembles a serpent woman. Famously called, "The Mother of all Monsters" she mothered many well-known monsters, like the three-headed dog Cerberus, the Hydra, and the Chimaera, among many others.