>>56935641Well didn't ORAS talk about how a pokemon has infinite energy using its life force as a fuel and that's where a lot of the PokeWorld's energy comes from. It would stand to reason that Eternatus, the pokemon with Infinite Energy has basically been burning away its life until its just a skeletal husk, it just still hasn't died yet for whatever reason. You could also technically argue that it always looked like this because bits of bone and areas having broken off (which could just be more rib cages or fingers), because it'd be easier to travel in space. It could just be one of Arceus' thousand arms too considering it's hand form.
Pokemon in general is weird as hell, there are multiple timelines, dimensional spaces, aliens, some Pokemon which exist in multiple dimensions (like certain ultra beast locations), not every Alien Pokemon came on a meteorite (most did but Staryu, Gothita, and Elgyem didn't). Pokemon is a mess, it's best not to think about it from a lore or logic perspective.
