>>46537238I like the theory that Eternatus is some sort of special ancient Toxtricity/the Toxtricity descended from Eternatus, sort of like the theorized relationship between Carbink and Diancie.
Makes sense as a skeleton mon if you think about how cartoons depict electrocution. All its flesh became totally fried and the pokemon that remained are the deadly draconic bones.
Necrozma is a great example of a hideous mon that really looks more like a concept than a creature, which is why they "fixed" it with a dragon form.