Sorry if this is a silly question or one you can't answer, but I am not sure how I would combine the portions of this asset pack and I don't know what I would look up. Is there a term for this kind of asset/technique?
Viewing post in Pixel Sci Fi Characters comments
Yes, it is called modular, and the ideal would be to create a character customization system using the game engine. I imagine that you have seen similar things in many games, such as when you are creating your character before playing and you choose its appearance.
It's also useful for creating a variety of different characters to populate your game, not necessarily heroes but also enemies, npcs, etc.