Yonaka is a dark spirit, an immortal being representing the elements of mist and shadows. He has been created and tormented by a demon for hundreds of years, causing him to harbor an intense hatred for demonkind. He can turn his body into a mist and travel through shadows. He is arrogant, bloodthirsty, mysterious and closeted. He is Japanese. His name means midnight. He used to be a lumberjack. He fights with axes. His fur is blue and he wears dark leather pants. He does not speak of his past.