Agiel

Agȋȇl (עֲזָאזֵל) The Intelligence (beneficial spirit) of Saturn mentioned as a Spirit in such works as the Key of Solomon. As it says on the 10th Plate: "The First Pentacle of Mercury.--It serveth to invoke the Spirits who are under the Firmament." And the letters forming the names of the spirits Yekahel and Agiel. He is also described as being the presiding spirit of the planet Saturn, with Zȃzȇl.

Agiel is used in the Alphabet of the Genii to represent the letter A, which is where his sigil comes from.