Tanmeijirô Genshôgo is the Japanese name for Ruan Xiaowu, a fictional character from the 14th-century Chinese novel Water Margin (Suikoden in Japan) and one of the 108 heroes who rise against corrupt officials. He is the second of the three Ruan brothers, nicknamed the 'Short-lived Second Son', and a skilled fisherman and naval commander famed for his ability to stay underwater for long periods. The character became widely known in Japan through Utagawa Kuniyoshi’s woodblock series One Hundred and Eight Heroes of the Popular Suikoden, which depicts him as a powerful, bare-chested warrior in dramatic underwater scenes. These prints, featuring elaborate tattoos of leopards or tigers among bamboo, helped popularise hero tattoos in 19th-century Japanese culture.