The Great Kraken

Beneath the waves, The Great Kraken sleeps for untold ages, awaiting some fell sign or calling. Land-born mortals who sail the open sea forget the reasons their ancestors dreaded the ocean, even as the races of the deep ignore strange gaps in their histories when their civilizations nearly vanished after the appearance of the tentacled horror.
At the beginning of time, The Great Kraken served as a fierce warrior of the gods, long before even the fall of the Dragons. When the gods' wars ended,The Great Kraken shrugged free of their servitude, never again to be bound by other beings. Whole nations quake in fear when The Great Kraken emerges from its dark demesne, and even in the middle of the deepest oceans, storms rise or abate according to its will. The Great Kraken is a primeval force that obliterates the greatest achievements of civilization as if they were castles in the sand. Its devastating attacks can destroy ocean trade and halt communication between coastal cities. An ominous darkness presages a kraken's attack, and a cloud of inky poison colors the water around it. Galleons and warships vanish when its tentacles uncoil from the deep, The Great Kraken breaking their masts like kindling before drawing down ships and crew. Not even landlocked surface dwellers are safe from a The Great Kraken's wrath