The Knight had some brighter colours than the Space Trooper, I also experimented with a different brush for the facial hair and tried some different materials which I hadn't used before.
I found that Substance Painter has a Chainmail material which was very convenient for this character as his Shirt, coif and trousers are all chainmail, I had to resize the material so the metal rings were not too big and replicate this for each part that had it. I also many leather materials as well for the boots, belt, gloves and sheath.Using a black mask on the armour pieces I was able to apply a layer of gold which is only visible over the areas with an alpha placed, this allowed me to add gold parts to the armour giving it a more fancy and fantasy like design. I also used an alpha on the back of the Knight's robe to have a templar style cross so the back would not remain empty. I also used a "fur" brush on the facial hair to show a light beard.