Sha Wujing
In the manga/anime "Saiyūki", Sha Gojyō is loosely based on Sha Wujing, with a modified version of the same weapon (albeit incorrectly called a "shakujō", the Japanese name for the Chinese "xīzhàng"). However, Gojyō is described as being half human, half "yōkai" with the ability to breathe underwater, instead of a man-eating river monster.