Hellhound VS Siren (mythology)
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Hellhound
A hellhound is a supernatural dog in folklore. A wide variety of ominous or hellish supernatural dogs occur in mythologies around the world. Features that have been attributed to hellhounds include mangled black fur, glowing red eyes, super strength and speed, ghostly or phantom characteristics, and a foul odor. Certain European legends state that if someone stares into a hellhound's eyes three times or more, that person will surely die. In cultures that associate the afterlife with fire, hellhounds may have fire-based abilities and appearance. They are often assigned to guard the entrances to the world of the dead, such as graveyards and burial grounds, or undertake other duties related to the afterlife or the supernatural, such as hunting lost souls or guarding a supernatural treasure. In European legends, seeing a hellhound or hearing it howl may be an omen or even a cause of death. They are said to be the protectors of the supernatural, guarding the secrecy of supernatural creatures, or beings, from the world.
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Siren (mythology)
In Greek mythology, the Sirens (Greek singular: Σειρήν, Seirḗn; Greek plural: Σειρῆνες, Seirênes) were dangerous creatures, who lured nearby sailors with their enchanting music and singing voices to shipwreck on the rocky coast of their island. Roman poets placed them on some small islands called Sirenum scopuli. In some later, rationalized traditions, the literal geography of the "flowery" island of Anthemoessa, or Anthemusa, is fixed: sometimes on Cape Pelorum and at others in the islands known as the Sirenuse, near Paestum, or in Capreae. All such locations were surrounded by cliffs and rocks. According to the Greek Neoplatonist philosopher Proclus, Plato said there were three kinds of Sirens: the celestial, the generative, and the purificatory / cathartic. The first were under the government of Zeus, the second under that of Poseidon, and the third of Hades. When the soul is in heaven the Sirens seek, by harmonic motion, to unite it to the divine life of the celestial host; and when in Hades, to conform the soul to eternal infernal regimen; but when on earth their only job to "produce generation, of which the sea is emblematic".