>>55721674You are seeing it incorrectly, that is just the illusion of a centaur, the original forms of Palkia and Dialga are imperfect copies of Arceus, what looks like a breastplate and shoulders is only the stylized neck of the pokemon, in a few words Dialga and Palkia are just a pair of malformed "llamas" (When you compare it with Dialga and Arceus it is more evident)
Something similar to Malamar that emulates the shape of a vampire or mad scientist with its cape and messy hair, but in reality it is just an inverted squid, but when it swims you can see its true physiognomy.