High in the mountains of Kalos, there burns a fire which can not be extinguished by even the strongest of water pokemon. Generations of elite trainers have climbed the mountains with their best water-types, hoping to quench the fire; instead, their attacks evaporated into a steam which only fed the flames. Those who survived to return from the summit invariably reported that the fire was a pokemon, and that its name was Volcanion.
It is perhaps too kind to say that the people of Kalos worship Volcanion; they offer it sacrifices of fire and water, but only to calm its wrath. For Volcanion has indeed erupted a few times in recorded history, and when it did, the effect on Kalos was every bit as devastating as Yveltal's. It is hard not to weep when one reads the ancient texts written by the few survivors, which candidly tell of fire pokemon becoming suddenly far more powerful amidst accounts of entire cities incinerated at once by Volcanion's explosive wrath.
Volcanion has not exploded in over a thousand years, and there are many who hope that the technology and stronger domestic pokemon of modern times can forever keep it at bay. But the slopes of Volcanion's old mountain have been repopulated over the centuries – first by desperate peasants looking for land, then by kings and nobles who had forgotten the lessons of history. As humanity grows more aggressive in its relationship with the nature, it has sadly forgotten the dangers of the mighty pokemon who lurk deep within.
There is, of course, no water which can douse Volcanion today, if there ever was – for generations of attempts have transformed it into a water pokemon. Before disaster strikes, mighty trainers of this age should note that water has weaknesses of its own.
