Unreal comic book postprocess/material

a sneak peak at a private project that I'm working on in my spare time; probably another thing i will never finish ;) outline is done 99% with a post process and the character shading is done through material; All the pics (except the shaded mesh at the end) are unaltered screenshots from Unreal 4 engine. I've created the mesh using ZBrush and Marvellous.