..But evil corrupts everything, and finds special pleasure in corrupting those things that are most pure and naive in the world. Unicorns are one of the most beautiful encarnations of purity, but they can be turned to their opposite. They can be corrupted. One of the most terrifiying things in fantasy is a dark unicorn. As intelligent, powerful and willpowered as their light opposites; but only wanting to destroy, kill, burn and darken all the joy in the world. It is difficult to make a true unicorn evil, but it can be done, and the result is a nightmare creature like this; dark unicorns keep the beauty of their pure counsins, though in a corrupted twisted mood.