I like the idea of heavy armour with a dark hood, but it could reduce the overall character's design as you couldn't see the character. The idea of using some sort of lightning and a shield is quite interesting.
Art Station has done a great feature on James Paick and his studio "Scribble Pad Studios". Both interesting and thoughtful, we recommend you check it out! James done has some great CDW instructional titles which can be found on our website.