A long, long time ago, thousands or tens of thousands, or even tens, or millions of years ago, a monster was born somewhere between heaven and earth. No one knows when he was born, where he was born, what his name was, or what kind of creature he was. They only know that he was very ugly, very ugly, so ugly that even gods, immortals, humans, demons, monsters, ghosts, and even animals were unwilling to classify him as their own race.
Concept: a random idea