The first spirit of the Goetia: a king ruling in the east, commanding sixty-six legions, appearing — per Weyer and the Lesser Key — with three heads at once: a toad, a man, and a cat, speaking in a hoarse voice. His documented office is a single, coveted grant: he 'maketh men go invisible.'
The name is the fossil of Baal Hadad, the great storm god of the Levant, worshipped for two thousand years before the demonologists filed him under Hell. Like Astaroth (from the goddess Astarte) he is the clearest evidence that the grimoire hierarchy was partly built by demonizing other people's gods — a pattern the archive documents rather than repeats.
De Plancy's Dictionnaire Infernal (1863 edition) supplied the engraving that fixed his image forever: the three heads on spider legs, one of the most reproduced images in occult publishing.