So~ I finally did the doodles of those creatures.
I decided that there would be main guardians for each of the biomes. I can also create smaller fairies and spirits, but these are the main. Sorry for the poor quality sketches, I made them very quickly, just to present the idea.
… an I just jhsdbcfdhgsdhhcjhsdgf about Quetzalcoatl-like guy ;w; I wanna draw him in colors)
These guys need to be included in a mod. NOW.