Hikaru Midorikawa
was an undercover member of the Tokyo Metropolitan Police Department Public Security Bureau inside the Black Organization with the codename . He is the younger brother of Takaaki Morofushi. Not much has been revealed about his past and his time inside the organization, although he was acquainted with Rei Furuya, an undercover agent from the same organization and Shuichi Akai, an undercover FBI agent using the alias Dai Moroboshi. Vermouth mentions that Scotch was killed before his real name was revealed to the other Black Organization members. It is revealed that Scotch's death was actually a suicide itself. His voice actor is Hikaru Midorikawa.