Pokémon Center Squishmallows come with a special patch
Sorry to butt in
Pikachu and Gengar Squishmallows are now easier to purchase than ever, as they’ve been released through retailers like Walmart. The original batch came from the Pokémon Center website and Pokémon Center locations in Japan. While these are all largely the same, there is one small differentiator in the case of Pokémon Center purchases.
As you can see in the image above, the back of Pikachu and Gengar come with a little Pokéball patch sewn into them, complete with a trademark symbol sewn in. Not a huge difference by any means, but it will let Pokémon super fans know that these Squishmallows are extra special!