Vassago, in demonology, is a mighty Prince of Hell (see Hierarchy of demons), ruling over twenty-six legions of demons. He can be persuaded to tell the magician of events past and future, can discover hidden and lost things, and has a "good" nature.
He is described in The Lesser Key of Solomon as follows:
The Third Spirit is a Mighty Prince, being of the same nature as Agares. He is called Vassago. This Spirit is of a Good Nature, and his office is to declare things Past and to Come, and to discover all things Hid or Lost. And he governeth 26 Legions of Spirits, and this is his Seal.
Joseph H. Peterson - The Lesser Key of Solomon
Rod Ferrell of Murray, Kentucky used a variation of this name (Vesago) when interacting with his 'vampire gang', actually believing himself to be a 500-year-old vampire named Vesago. He is known as the leader of a group that committed the murders of Richard and Ruth Wendorf in Eustis, Florida. The murders were brought on by Ferrell's belief that he was rescuing his friend, Heather Wendorf, from what she described as 'Hell'. Rod Ferrell was originally sentenced to death but this was changed to life in prison without parole.
Dean Koontz used a character in his book HIDEAWAY that was possessed by the spirit Vassago.
- Peterson, Joseph. "Lemegeton Clavicula Salomonis, or Lesser Key of Solomon". Ars Goetia. Retrieved 2007-04-14.