Yakuza , also known as gokudō , are members of transnational organized crime syndicates originating in Japan. The Japanese police, and media by request of the police, call them bōryokudan , while the yakuza call themselves ninkyō dantai . The English equivalent for the term yakuza is gangster, meaning an individual involved in a Mafia-like criminal organization. The yakuza are known for their strict codes of conduct, their organized fiefdom nature, and several unconventional ritual practices such as yubitsume, or amputation of the left little finger. Members are often described as males, wearing "sharp suits" with heavily tattooed bodies and slicked hair. This group is still regarded as being among "the most sophisticated and wealthiest criminal organizations".