When Beleth was an angel, he was of the Order of Powers, and he’s no less powerful in Hell. He’s one of the four top guys, a “mighty King and terrible.” The Goetia says he rides a pale horse, which is interesting, since Revelation 6:7-8 mentions a character riding a pale horse, Death, as one of the Horsemen of the Apocalypse:When the Lamb opened the fourth seal, I heard the voice of the fourth living creature say, “Come!” I looked and there before me was a pale horse! Its rider was named Death, and Hades was following close behind him. They were given power over a fourth of the earth to kill by sword, famine and plague, and by the wild beasts of the earth.
When Beleth arrives, he’s accompanied by trumpets and other musical instruments. Also, he arrives pissed off and will probably kill you unless you hold a hazel wand in your hand, strike the South and East quarters and then make a triangle outside the magic circle.
You have to then threaten Beleth (yeah, sounds like a good idea) until he goes into the triangle, and then he’ll do what you ask. Also, always wear a silver ring on the third finger of your left hand and hold it to your face as you summon him.
But the Goetia warns to treat him kindly because he’s a King.
Beleth’s specialty is making men or women love you–until your desire is fulfilled. After that… shrug.