Pikmin 4 Dark Textures

[HunterMan43622]

While ripping models from Pikmin 4, I imported some into Blender to check them out. And the textures are much darker than seen in-game.
I also got 3 tex-maps. Diffuse, Normal, and one with an M in it that appears to be what brightens up the textures. But i have no idea how to apply it. There's nothing online talking about it. If anybody knows how to apply the textures, Please tell.

Is there a way you can post these? Ty