Despite how I feel about the Paradox Pokemon in general.............I think Slither Wing is adorable. XD
Pokemon belongs to Nintendo/GameFreak.
She is one of my favs too, I also noticed in a lot of the shows and movies they give the legendary pokemon kaiju roars. I have heard Mothra used for quite a few, I think they used her for Giratina in one of the movies.
It really doesn't surprise me--some of those companies use a lot of stock sound effects. I know with the Ultraman franchise (though, granted, Eiji Tsubaraya worked on the first few original Godzilla films as well as creating Ultraman), they reused some of the Godzilla costumes and sounds for monsters in the Ultra series. :)
One of the interesting things about these Scarlet and Violet games is that some of these newer Pokemon have more than one or two sounds--I think I've heard Slither Wing make about 4 different sounds in the game. So, I guess as game technology evolves, they can make Pokemon a bit more well-rounded in how they "speak".
Link
TheNextGenHero
Cute! :D