One of the Master Detectives dispatched to Kanai Ward. His Forte is Animal Investigation.
He loves the harmony between people and nature and specializes in dealing with those who would try to disrupt it. His tendency toward leading the conversation and moving things along efficiently sometimes gives off the impression of arrogance to those around him.

Zilch is actually the impostor between the detectives, being a hitman sent by Amaterasu corporation to kill everyone in the Express.