Shudde M'ell is a mile long great grey chanting worm creature that releases odd acids. It burrows through the earth, melting all rocks in its wake. It is the supreme regent of the Chthonians as well as the largest and most evil of the race.
It appears as a colossal worm with tentacles for a head. It can alone cause a force earthquake 3.5 on the Richter scale, within a radius of 7km. Although there is some reference of old cultures that practiced some type of cult to some of these beings, at the moment nobody is known that renders cult to them. It is believed that the 1906 San Francisco earthquake was caused by Shudde M'ell.