Pokémon Model Ripping Project

[F0x06]

 The blender shaders to fix the color would only work in blender I heard correct? Or is there a way to export the correct colored ones as an image texture for use in Unity and stuff like that?

You can indeed export the fully-colored texture by a method called 'Baking'. I don't have a tutorial for that, and most of the tutorials I've seen typically don't do it in the way I like to do it.

The way I do it, I attach the input that goes into the Principled BDSF into the Material output, and bake out by Emit with 5px, with Render Samples at 1 (so it goes by faster).
Example:

*image*

I've gotten the textures on this mostly fixed, although there's a weirdness with the eyes. I took a few pictures of what's going on with descriptions. https://imgur.com/a/jXuvJML
I'm not super experienced with model making, fairly new to it. Do you know why this would be happening?

Why don't you rip Piplup's model from Old Gen games, like Sun and Moon? Most likely the models are the same, but they're simple to rip in old generations. If you're not interested in animations this would be the easier way, you will save yourself the troubles of textures baking. Try with Ohana3DS!