(portrait of Sargatanas from Le veritable dragon rouge, 1822)
Sargatanas is ranked as a brigadier in the army of hell by the Red Dragon. His portrait resembles a moth or other flying insect. This indicates a relatively low level of authority for this demon.
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.