Internal Demon III

Another Internal Demon,
I made it yesterday with a boligrapher
Thoughts of Great Cthulhu, Barlowe's Demons, and much other things came into my mind while I was developing the Idea, I concieved this thing as an enormus, tank-like organism that roots itself on a spot and begins draining water or fluid from the ground, later it modified, and in the concept of a Demon, the creature would drain lava and feed from it...

Anyways, As I saw it, is a flightless winged creature, Wings are remmanent od a flying larval form

The circular thing floating above it is a Sigil, kind of a signature of Demons, it's supposed to glow on fire light, as in Barlowe's Inferno, and is both the signature and the manifestation of the "magic" or phychic powers of that demons