Render of the helmet - not much attention was paid to texturing as it was going to end up as a physical prop.
Render of a photogrammetry model of the actor in the costume, used as a digital double in a couple of shots.
Helmet 3D printed and cast in rubber.
Creating the costumes for some of the characters involved a bit of 3D printing, the helmet, weapons, bits of the armour.
Original designs by Carlos Ezquerra, Strontium Dog created by John Wagner and Carlos Ezquerra for Starlord comic.