The Demon Vepar is a Fallen Angel and 42nd of the 72 Spirits of Solomon. In Hell, Vepar is a duke with 29 Legions of Demons under his command.
He appears as a mermaid and has jurisdiction over certain things pertaining to the sea: He guides the waters and battleships and causes the sea to seem full of ships.
When commanded, he will raise storms at sea. He can cause a person to die in three to five days of wounds that putrefy and become filled with maggots.
According to Johann Weyer, a person so afflicted can be healed “with diligence.”
From “The Goetia: The Lesser Key of Solomon the King” (1904) Written by Mathers, Samuel MacGregor Liddell :
The Forty-second Spirit is Vepar, or Vephar. He is a Duke Great and Strong, and appeareth like a Mermaid. His office is to govern the Waters and Ships laden with Arms, Armour, and Ammunition, etc., thereon. And at the request of the Exorcist he can cause the seas to be right stormy and to appear full of ships. Also he maketh men to die in Three Days by Putrefying Wounds or Sores, and causing Worms to breed in them. He governeth 29 Legions of Spirits, and his Seal is this, etc.
From the “Pseudomonarchia Daemonum” ( 1583 )written by Johann Weyer (Johann Wier)
Vepar, alias Separ, a great duke and a strong, he is like a mermaid, he is the guide of the waters, and of ships laden with armour; he bringeth to passe (at the commandement of his master) that the sea shalbe rough and stormie, and shall appeare full of shippes; he killeth men in three daies, with putrifieng their wounds, and producing maggots into them; howbeit, they maie be all healed with diligence, he ruleth nine and twentie legions.
Original Text :
Vepar, alias Separ, Dux magnus and fortis: Similis syreni: Ductor est aquarum and navium armis onustarum. Ut mare jussu magistri turgidum navibusque plenum appareat, efficit: contra inimicos exorcistæ per dies tres vulneribus putrescentibus vermesque producentibus homines inficit, à quibus tamen negotio absoluto sanantur omnes. Imperat legionibus vigintinovem.
From the “Dictionnaire Infernal” (edition of 1863 ) Written by Jacques Auguste Simon Collin de Plancy
Original Text :
Vépar ou Sépar, puissant et redoutable duc du sombre empire. Il se montre sous la forme, d’une syrène, conduit les vaisseaux marchands et afflige les hommes de blessures venimeuses, qu’on ne guérit que par l’exorcisme. Il commande vingt-neuf légions.