From all the ancient books, he was only mentioned once. When the sins and sorrows of mankind became so great all the unicorns were taken from the earth because their purity could not stand the descent into chaos. Only one remained. He believed if he stayed he could help humanity absorb the pain around them. His pure white color slowly turned to black as he absorbed the sorrows of mankind. Even a comforting angel could not convince him to leave. The Dark Unicorn remains.