PIF has a github repository for the sprites (though rn they seem to be having some trouble with it). It's easy to write a program that extracts the png files given their file names from the folder. With websites like fusiondex.org, getting those file names is super easy.

I wasn't planning on posting today, but the Pokémon Infinite Fusion owner/dev just decided to use generative AI. To some people this blatant disregard for the wishes of the artists working for PIF might seem surprising, so I felt like I should clear some stuff up: they've always been like this (1/2)