>>22101382Pokemon are monsters created by the collective ideas in a culture. Unown are meant to represent that idea sort of, when enough appear they alter reality because they express human thoughts in the form of words. That's what the whole 3rd movie is about.
https://www.youtube.com/watch?v=-jSkn4tFC1kIn the manga and the event, when Arceus summon Palkia, Dialga, and Giratina, a swarm of Unown appear with them. It can be speculated that this is because it's actually as if recreating them, kind of like how prayers are. They're "transdimensional" because they are from some, for lack of a better word, creation realm. Pokemon are more than just animals, they're monsters for a reason.
tl;dr they can wear clothes because the fuck it's martial arts nigga
