Masahiro Takanashi (born January 22, 1983), also known as Masa Takanashi, is a Japanese professional wrestler. He is best known for his tenure with DDT Pro-Wrestling, where he has become a one-time KO-D Openweight Champion, a three-time KO-D Tag Team Champion, a one-time DDT Universal Champion and an 18-time Ironman Heavymetalweight Champion, among other titles, over the course of his career. He is also known for his appearances in Emi Sakura's Gatoh Move Pro Wrestling/ChocoPro and Ice Ribbon joshi puroresu promotions; in the latter, he wrestled as a cross-dressing gimmick, Ribbon Takanashi, and became a one-time International Ribbon Tag Team and one-time Triangle Ribbon Champion.