Aki Hayakawa (早はや川かわ アキ Hayakawa Aki) is a regular civilian who works as a rookie police officer. After the Gun Devil killed his parents and younger brother, Aki was transported to an orphanage where he grew up and became a police officer who assisted Devil Hunters in fighting devils and taking down the Gun Devil. Aki generally appears to be a very stoic man who acts mature and sometimes blunt to the point of rudeness when he is with his fellow officers, but he is fairly softhearted.