#4 Akira Tozawa
Akira Tozawa made a name for himself in the WWE Cruiserweight Classic and even made a splash on the main roster, becoming Cruiserweight Champion at one point. Years before, however, in Japan, Tozawa was far from fit and it was clear that he knew what needed to be done.
Had Tozawa not gotten into the shape that he did, it's safe to say that WWE wouldn't have even considered him.
Edited by Anirban Banerjee