Barchiel's seal
Barchiel, an Aerial Devil, is a chief duke in service under Hydriel, one of the eleven Wandering Princes. Commanding 1,320 servitors, he appears to his summoner as a serpent with a virgin's face and head, and he is very courteous and willing to obey. Barchiel is both a diurnal and nocturnal demon who lives in or near water, marshes, and wetlands.