Prelude to space war / 3D illustration of science fiction scene showing large military android with rifle looming over moon with fleet of spaceships in the background

gun robot spaceship 3d alien art concept futuristic ship war "3d illustration" android armour attack black blue character combat cybernetic exoskeleton fantasy fiction fleet future galaxy glow glowing illustration machine mech mechanical military moon red rifle robotic robotics robots science ships soldier space stars technology trooper universe weapon