Legend has it that a Christian can kill a troll if they say its name aloud, so as you can imagine troll names are some of the best-kept secrets in the world. Despite that, the names of some trolls from literature and Norse Mythology are known:
Grendel – the troll from Beowulf and one of the three main antagonists of the epic poem
Dunker – a troll mentioned in an old folktale from Fosen
Ymer – a jötunn and the largest creature from Norse Mythology
Dovregubben – the troll king in Henrik Ibsen’s Peer Gynt
Hrungnir – a jötunn and the largest of its kind in Old Norse texts
Trym – king of the jötnar, reigned in Jötunheimr
Geirröd – another jötunn from Norse mythology, father to Gjálp and Greip
Li Grande Zombi is the major serpent spirit of worship among New Orleans Voodooists. In New Orleans Voodoo, snakes are not seen as symbols of evil as in the story of Adam and Eve. Snakes are considered to be the holders of intuitive knowledge—knowing that which cannot be spoken. Women often dance with serpents to represent the spiritual balance between the genders. Voodoo rituals in New Orleans almost always include a snake dance to celebrate the link to the ancient knowledge. The origin of Li Grande Zombi can be traced to the serpent deity Nzambi from Whydah in Africa. According to the Bantu Creation story, Nzambi is the Creator God:
Nzambi exists in everything and controls the universe through his appointed Spirits. In the beginning only Nzambi existed. When he was ready to create, millions and millions of pieces of matter swirled around him counterclockwise until Ngombe was born. Ngombe is the universe, the planets, the stars and all physical matter. Nzambi then created movement, and the matter that he had created began to change and drift apart. So, he decided to create a being that could traverse the universe and mediate between matter and space. Nzambi focused on a fixed point and gave life to a being who was simultaneously man and woman, a manifestation of the nature of Nzambi, called Exú-Aluvaiá.
Sitri (also spelled Bitru, Sytry) is a Great Prince of Hell, and reigns over sixty legions of demons. He causes men to love women and vice versa, and can make people bare themselves naked if desired. He is depicted with the face of a leopard and the wings of a griffin, but under the conjurer’s request he changes into a very beautiful man.
According to “The Country Justice”, that was responsible for the legal aspect of witchcraft prosecutions in the New England colonies, owning a hare could be seen as a witch mark for hares were considered magical familiars.*
* Based upon European folklore of the medieval and early modern periods, familiars (sometimes referred to as familiar spirits) were believed to be supernatural entities that would assist witches and cunning folk in their practice of magic.
The Empusa is a shapeshifting creature of the night, though she also appears at midday. She is an eidolon, an illusory phantom, with an appetite for the flesh of her victims. All of which aligns well with the Titaness Hekate, who is sometimes the mother of Skylla, and often associated with ghosts and haunts.
The Empousa appears in The Frogs by Aristophanes and may have had a role in the Eleusinian Mysteries, which may stem from her association with Hekate. She can appear as a cow, mule, woman, or a dog. With the exception of the mule, Hekate can appear as any of those animals according to lore. In each of these roles, the Empousa is a fearsome creature who resides in the underworld, another connection to Hekate, who is sometimes known as the Queen of that realm. The Frogs puts Empousa in Hekate’s train, a creature bound to Hekate’s will.
Some scholars believe that Hekate and Empousa began as one, with the monstrous creature being an epithet for the Goddess. Yet, Empousa is also described as a vampire-like daimon who will devour her victim. Most surviving stories suggest that the Lamiai, including Empousa, were used as boogy-men, to scare children into following rules.
Hekate and Empousa share an underworldly nature, an association with the Dead, with the same figures of cow, woman, and dog, as well as both wearing bronze sandals, and being an, at times, fearful figure. It is no surprise that scholars believe that they, at the very least, have some common origin.
Hekate-Empousa, Who haunts the day and night, Come forth from the Underworld, You who attends the sacrifices for the Dead, Stay your hand from those I love, And be kind, And many will be the offerings poured in your honor, Oh Hekate-Empousa, Bless us, Phantasmal Goddess.
Gusion (also Gusoin, Gusoyn) is a strong Great Duke of Hell, and rules over forty legions of demons. He tells all past, present and future things, shows the meaning of all questions that are asked to him, reconciles friends, and gives honour and dignity. He is depicted as a baboon or according to some, in the form of a “xenophilus.”
Oftentimes called the female equivalent of the Jigar Khoy, the jigarkhwar of the Sindh region of India is, although similar in many ways, distinctively different type of vampiric witch. The jigarkhwar uses her power of hypnosis to place a person into a trancelike state in order to steal his liver. After the organ has been stolen, the vampiric witch returns to her home and cooks it. While this is occurring, the victim falls suddenly ill. As soon as the last bite of the liver is eaten, the person’s life-energy has been consumed, and he dies. The spell can be reversed as long as a single bite of the liver remains uneaten. As soon as it is eaten, the person’s fate is sealed.
Source: Crooke, Introduction to the Popular Religion,
An iara is a vampiric spirit or vampiric witch from Brazil, depending on the way it died. If a person dies violently, or before his time, or outside the Catholic Church, or if a body is not given a proper Catholic burial or is buried in the jungle, that person will become the vampiric spirit type of iara. However, if a living person sells his soul to the devil for power, he will become the vampiric witch kind of iara.
The iara, no matter how it came to be, can, in its human guise, sing a beautiful, sirenlike song that will lure men out into the jungle. There is a protective chant that can be uttered as soon as a man hears the iara’s song, but he must be quick, otherwise he is doomed to fall prey to it. Once the iara has secured a victim, it shape-shifts into a snake with red eyes and, using a form of mesmerism, hypnotizes its prey, after which it will drain off his blood and semen. It leaves the bodies of those it has killed near waterways.
Buer —> The Tenth Spirit is Buer, a Great President. He appeareth in Sagittary, and that is his shape when the Sun is there. He teaches Philosophy, both Moral and Natural, and the Logic Art, and also the Virtues of all Herbs and Plants. He healeth all distempers in man, and giveth good Familiars. He governeth 50 Legions of Spirits, and his Character of obedience is this, which thou must wear when thou callest him forth unto appearance.
Paimon —> The Ninth Spirit in this Order is Paimon, a Great King, and very obedient unto Lucifer. He appeareth in the form of a Man sitting upon a Dromedary with a Crown most glorious upon his head. There goeth before him also an Host of Spirits, like Men with Trumpets and well sounding Cymbals, and all other sorts of Musical Instruments. He hath a great Voice, and roareth at his first coming, and his speech is such that the Magician cannot well understand unless he can compel him.
This Spirit can teach all Arts and Sciences, and other secret things. He can discover unto thee what the Earth is, and what holdeth it up in the Waters; and what Mind is, and where it is; or any other thing thou mayest desire to know. He giveth Dignity, and confirmeth the same. He bindeth or maketh any man subject unto the Magician if he so desire it. He giveth good Familiars, and such as can teach all Arts.
He is to be observed towards the West. He is of the Order of Dominations. He hath under him 200 Legions of Spirits, and part of them are of the Order of Angels, and the other part of Potentates. Now if thou callest this Spirit Paimon alone, thou must make him some offering; and there will attend him two Kings called Labal and Abalim, and also other Spirits who be of the Order of Potentates in his Host, and 25 Legions. And those Spirits which be subject unto them are not always with them unless the Magician do compel them. His Character is this which must be worn as a Lamen before thee.
Mark Beré Peterson: The Haunted South - Hauntings, Urban Legends, History, Folklore and Southern Witchcraft 