"Oh, weren't you there when Necro explained?" Nao said, seeming concerned. "Ah, nevermind. We are a species that acts as a darker counterpart to the dream world. We eat dreams, but our bodies leave behind a sort of non-lethal toxin that creates what you from Equestria commonly refer to as 'bad dreams' or 'nightmares'. Oh, yes, Necro was going to tell you the story of how we came to be. Necro?" Necro swept his crimson gaze over everyone and shifted position. He cleared his throat and began: "This is the story of the first nightstallion- our great-great-great grandfather. Now, long ago, far before the time of your two princesses, there was a shadow pony. A simple shadow to ponies' eyes, he slunk along through the world unnoticed by most. Now it came that he fell in love with one of the four princesses that ruled the separated lands of dreams, land, sky, and sea, a wish pony- to you, that's, quite simply, a pony with colourful butterfly wings who grants wishes and creates dreams- of snow white, beautiful beyond compare. He was a terribly bashful pony, rather ashamed of what he was as well, and had no idea how to go about greeting her. But, one night, he gathered up all of his courage and entered the princess's dream. He tried to greet her and declare his love, but she was afraid of him. She screamed and tried to run from the dark figure, and he left, hating what he was more than before. He created his own dimension, fittingly a dark counterpart to the dream world, and would offer those rejected an understanding home and a share of his power if they joined his ranks. And thus, our species came to be." he finished.