Found it while doing some research about japanese mythology and stuff, thought it was cool, never seen it here and decided I should share with you guys.
Part 2 of gen 1 in the sticky, more stuff on the guy's Deviant Art: nojoh.deviantart.com/art/pokemon-yokai-emaki-145019643
"Yōkai are a class of supernatural monsters in Japanese folklore. The word yōkai is made up of the kanji for "bewitching; attractive; calamity" and "apparition; mystery; suspicious". Yōkai range eclectically from the malevolent to the mischievous, or occasionally bring good fortune to those who encounter them. Often they possess animal features, other times they can appear mostly human, some look like inanimate objects and others have no discernible shape. Yōkai usually have a spiritual supernatural power, with shapeshifting being one of the most common."
Extracted from the Wikipedia article about Yôkai because I'm a lazy ****.