Pixelmon Mod

I suggest these biomes in order to catch alolan and galar mon exclusively and to evolve them.

The alolan biome would be a chill beach area, while Galar would be grassy hills.

Minecraft already has tons of biomes and alolan (and soon galar) forms already spawn in ones that fit their adaption. I don't think adding one biome per region would fit considering mons like Alolan Vulpix/Sandshrew make little sense on a beach. And adding multiple distinct biomes to fit all of them would just invalidate the entire point, because then you'd need to pad them with other spawns etc - essentially creating clones of vanilla biomes under a different name.

tl/dr: I don't see the point.