Vine
Vine is the 45th spirit, a great King and Earl who appears in the form of a lion.
Volac
Volac is high-president of hell and commands 30 legions. He tells of the positions of the planets and where to find serpents.
Vrykolakas
The Greek equivalent of the Slavic/European vampire was called the "vrykolakas" derived form the older Slavic term "vblk'b dlaka", meaning wolf pelt wearer.
Vucub Caquix
In Mayan mythology, Vucub Caquix, Seven Macaw, was a large bird that dwelled on the surface of the world after the flood.
Watchers/ Nephilim
According to Gen 6:1-4, these divine beings took wives from the beautiful daughters of men.
Yan-gant-y-tan
Yan-gant-y-tan is a demon from Brittany, who wanders the night holding 5 candles on his 5 fingers. He may also be Will-o'-the-Wisp and Jack-o’-Lantern.