Fūma Kotarō is the name adopted by the leader of the ninja Fūma clan in Japan. According to some records, his name was originally Kazama.
Fūma Kotarō was the fifth and the best known of the Fūma clan leaders. Born in Sagami Province on an unknown date, he became notorious as the leader of a band of 200 Rappa “battle disrupters”, divided into four groups: brigands, pirates, burglars and thieves.
His biggest achievement came when the Fūma ninja covertly infiltrated and attacked a camp of enemy clan forces under Takeda Katsuyori at night, succeeding in causing severe chaos in the camp, which resulted in mass fratricide among the disoriented enemies.