If your exporting out as an obj. your gonna lose the smoothing data and along with scale and practically anything else of value.

If your able to export out as a format that support smoothing.

It isn't hard to resmooth a complicated object.

As for generating normals, You can generate a normal from your objects but they won't give the object the roundness it requires without increasing it's polycount and generating a normal.

That being said, You don't always need a normal on an object they are only there for somethings like faking detail on a surface like screws and making an object seem more round than it actually is.

@iitone thanks

ps could make a batwoman texture of your 4k skin means the head the hands the feet(showed in pictures) painting in latex texture what is already available for cloth

batwoman texture

batwoman texture black latex