This is a basic space helmet, or alternatively a diving helmet. It's made of two materials, a blue metal and a tinted black glass. The glass part is transparent so theoretically if you put a character head inside this it should show through. Though this only works in cycles and not in eevee for reasons entirely unknown to me - I used basically this exact material makeup for the windows in my solar ship and it worked fine. Point being, results may vary depending on game engine or renderer.