Japan is very famous on Tumblr and DeviantArt where he posts doujinshis that he drew himself. He is known as nihon-is-2-cute-4-u
Prussia secretly loves yaoi but would never admit it.
Iceland and Norway both love books and would discuss books with each other, although very rarely.
America thinks bibble* is real.
In his spare time, Canada writes Creepypastas.
*Bibble is a fictional British snack that is basically colourful popcorn.