One name that everyone seems to know in the western touhou fandom besides ZUN is Walfas AKA KirbyM. His simplistic and unique art style is easy to recognize and with his release of create.swf, his art style is seen all over the place. So it shouldn't be of much of surprise that his drawings of touhou characters is quickly developing a fan-base in Japan where touhou fandom is enormous.
Walfas' is currently a college student who makes shiny animations and blogs about mostly touhou in his spare time. Recently, he teamed up with an ActionScript programmer, Thefre, to make the latest create.swf which is widely used by the fandom to create quirky fun touhou videos or pictures. Over time, many of the fan works even made it over to niconico douga which is the Japanese version of youtube (and used primarily by Japanese).
Eventually, Walfas finds himself collaborating with a Japanese doujin circle, ddiction, in creating a textbook for learning English called New Hori-ZUN: A pun on the New Horizon English learning textbooks. And that, by itself, is an amazing accomplishment.