Mystery

The world is full of these creatures... we don't know where or how they came from, they just appeared. Creatures over 10 meters tall to 40 meters tall, they have no face, just a being that walks on 4 legs and is completely white, and the young of these creatures are harmless... we don't know how many deaths they will cause when they grow up, will it be an Apocalypse? And when will the main boss awaken? These are more questions than answers, may God help us.