|Height||175 cm (5'9")|
|Weight||63 kg (139 lb)|
|Unusual Features||black lines under eyes.|
|Class||Middle Second Class|
|Meister Type||Knight, Dragoon and Tamer|
Ken has long black (dyed) hair, that is normally pulled back. His natural hair color is unknown. His eyes are blue-ish green, depending on the light. He often wears a plain white t-shirt, dark blue pants with a grey belt and a black jacket. Hanging from his belt is a small bag that he puts his gun and other items in. He's also seen carrying around a black katana.
Ken is a very cruel person. He hates demons and thinks the world would be a better place without them. His thoughts on people who are part demon is that they are "filthy beings that are far worse than the real thing and should die from the moment they are born" He feels the same about himself and often is seen beating himself up because of it.
Ken doesn't know anything about his mother or father aside from the fact that his mother was an exorcist and his father was half demon. He was adopted by a man who claimed to be his uncle. Durning the time that he grew up he was trained to be an assassin. Ken began to get bored with being an assassin and began to try to run away from his "uncle" but because his uncle tryied to keep him under his control Ken had no choice but to kill the man. He was later found on the side of a street by Emi. She adopted Ken and tought him about demons and how to be an exorcist.