Shimming Zou was a pretty slick modern flyweight. He won gold at flyweight at the Olympic in 2012. Near perfect for the amateur system thanks to his quickness and defense, Zou's problem as a pro is he had no power at all. Just one KO win. That's it. At one point there was a lot of buzz around him.
Hiroshi Kawashima deserves a mention. Dubbed "Untouchable" in Japan, he learned early his chin couldn't take a good shot and developed a defensive style as a result For a time it looked like Mark Anthony Barriga was going to be in the mix for this...and then he lost and vanished...properly slippery guy