Coscar O'Herian was the first and only Leprechaun Fungologist. He was a master in his field and extensively studied The Black, Droiyn and Iradar in an attempt to understand their secrets. He eventually found a way to use Droiyn to morph and shape reality. He inadvertently caused The Great Calamity which placed an inter-dimensional divide between certain areas of Earth and certain ares of the (in the words of O'Herian) "Fungoverse". Which is why the Feluxian Assortment is unnoticeable by most people not already exposed to the Fungoverse.