Sargatanas is a low-ranking demon.
Rank
Sargatanas is ranked as a brigadier in the army of hell by the 'Le dragon rouge' grimoire.
Appearance
His portrait resembles a moth or other flying insect.
A. E. Waite linked the image of Sargatanas shown above with Ophiel, the Olympic spirit of Wednesday and the planet Mercury -- see The Book of Ceremonial Magic, plate 2, page 37.