Kanō Jigorō
In 1907, Kanō Jigorō, the founder of judo, introduced the use of belts ("obi") and gi ("judogi") in the martial arts, replacing the practice of training in formal kimono. In 1914, Kanō's pupil Mitsuyo Maeda arrived in Brazil, a journey which led to the development of Brazilian jiu-jitsu. At the time, Kanō used only white and black belts.