>>56364266Nihilego filters the aether from its environment obtaining minerals and toxins. In its parasitic state it obtains everything from its host.
Buzzwole, probably feeds on sap from those "muscular" trees and in other worlds the most similar is blood plasma.
Pheromosa, may use its pheromones to get others to look for food for it, it is being so selective it must only feed on strange and delicious berries. It is the opposite of our cockroaches that consume everything, even so, it loves hamburgers.
Xurkitree, the constant electrical storms of its world provide it with everything it needs, in our world it must be like a desert for it.
Kartana, probably feeds like a plant, cutting rocks is its way of getting mineral nutrients.
Celesteela, its diet must be similar to a plant, but the difference is that in its world the soil and aquifers must be a type of volatile fuel.
Guzzlord, devours all matter, is a black hole with legs. Perhaps antimatter is its poison.
Blacephalon, feeds on the vital essence of other beings, probably travels to other worlds to feed and takes hibernation periods of 25-28 before feeding again.
Stakataka, is a communal being that is probably specialized in taking maximum advantage of solar energy and mineral nutrients from the soil, that is why they are seen static, what they are really doing is processing those food sources and minimizing their energy expenditure.