Creatures with the upper body of a beautiful nymph and the body of a dracon or sea-monster in place of legs. One of these creatures, Echidna spawned most of the monstrous creatures of myth.
Echidna
She was a monstrous Dracaena with the head and torso of a woman and the tail of a coiling serpent. She represented the corruptions of the earth; rot, slime, fetid waters, illness and disease.
She was the consort of Typhon; a monstrous, multi-headed storm-giant, who challenged Zeus to the throne of heaven. Together they spawned a host of terrible monsters to plague the earth including the Chimera, Cerberus, the Hydra, Sphinx and the Hesperian Dragon.
Parents: Phorcys and Ceto
Consort: Typhon
Offspring: Chimera, Cerberus, Hydra, Sphinx and Hesperian Dragon
Killed by: Apollo

Campe
She was a monstrous Dracaena set by the Titan Cronus to guard the Hecatoncheires and the Cyclops trapped in the pit of Tartarus. Zeus slew her and freed the giants from their prison to aid him in his war against the Titans.
She had serpentine hair, fifty bestial heads, lions, boars and other wild animals, were arranged about her shoulders or waist, and a thousand vipers for “feet”. Dark wings graced her shoulders and above her head she raised a deadly scorpion-sting.
Parents: Tartarus and Gaia
Killed by: Zeus

Poene
She was a monstrous Dracaena summoned from the Underworld by the god Apollo to punish the Argives for the cruel death of his infant son Linus. She was eventually slain by the hero Coroebus.
Killed by: Coroebus
Scythian Dracaena
She was the first ruler of the land of Scythia. She was a woman from the waist up with the tail of a serpent in place of legs. When Heracles was travelling through her realm with the cattle of Geryon, she stole some of the herd and insisted the hero mate with her before she would return them. He did so and she became the ancestor of a line of Scythian kings.

Echidna (Argive)
She was a Dracaena with the upper body of a woman and the tail of a serpent who murdered travellers throughout the lands of Argos and Arcadia. She was eventually slain by the hundred-eyed giant Argos Panoptes. Echidna’s parents were Peiras, a son of the king of Argos, and Styx, the nymph of a poisonous Arcadian stream.
Parents: Peiras and Styx
Killed by: Argos Panoptes