Formless Spawn of Tsathoggua

There are major horrific presences or "Old Ones" in the Milky Way galaxy and one of that is one of the Great Ontovores called "Tsathoggua". Tsathoggua is much like a metaphyical black hole, which eats forms, things, ideas, reformats all absorbed forms to its own purpose, and thus perpetuates itself. Tsathoggua is a slumbering cold war competition with similar Ontovores, such as Shub Niggurath, Cthulhu, Nyarlathotep, etc. It does not communicate, doesn't do diplomacy and it is pure malignant hostility or worst or cold disinterest at best. The most common manifestation of Tsathoggua is a pitchblack animate ooze that infects, mutates, contaminates and kills. A good amount of this stuff can be applied as a genocidal weapon, and has purpose all of its own, and will turn most known forms of life into gaunt twisted gnarled versions of itself, quite often associated with decay, disease, rot, tumors and extreme forms of infectiousness.