Azathoth

Azathoth is one of the Outer Gods of Lovecraftian mythology and as such is regarded as a cosmic deity of colossal proportions - beyond even the power of the Great Old Ones such as Cthulhu - Azathoth is seen as powerful but not necessarily all-knowing (Azathoth is actually a "Blind Idiot God"), the trait of being all knowing is said to belong to its fellow Outer God Yibb-Tstll: both are dwarfed by it's supremely powerful grandchild Yog-Sothoth.

History
According to Lovecraftian mythology Azathoth is the all-powerful "Blind Idiot God" or "Nuclear Chaos" - it is said to be stuck in an endless slumber and is served upon by countless lesser deities that play a maddening tune on innumerable drums and flutes to keep Azathoth from awakening, for if the great "Daemon Sultan" should awaken even for a few moments the mortal universe is said to be doomed as it will signal the ultimate destruction of the universe as we know it.

As well as its innumerable drummers Azathoth is tended upon by horrendous dancers and is said to float in the very centre of the universe in the centre of chaos itself (and hence "nuclear" may actually refer to its dwelling at the nucleus of the universe), no mortal has yet entered this realm and survived and judging by the visions spoken of by H.P. Lovecraft and later writers it is doubtful that any who did would wish to continue living, as Azathoth held the same insanity inducing aura as the other Lovecraftian horrors despite it being trapped in slumber.