He lives on Niklasberg, a hill between Bela nad Radbuzou and Tremesna and usually looks like a noble count (when helping)or a little cruel dwarf (when punishing).
There is a simillar spirit on the Bavarian part of the hills, who is named Tyllenberger, but in other characteristics is equal to Nippel. Nippel and Tyllenberger were not believed to be the same; there is a story about the time when they first met and celebrated it.