Chamoriel
Chamoriel: One of the twelve dukes who follow the demon Hydriel, a wandering prince of the air. Chamoriel commands a total of one thousand three hundred and twenty lesser spirits. He is named in the Ars Theurgia, a text that also contains the seal that summons and compels him. Although Chamoriel is a spirit of the air, he is nevertheless drawn to moist and watery locations, preferring to manifest in wetlands and swamps. When he appears, Chamoriel behaves in a polite and courteous manner which may seem at odds with his appearance: Chamoriel's manifest form is that of a serpent with a human head.
SOURCE:
The Dictionary of Demons written by Michelle Belanger