excellent painted portrait of a towering gigantic warrior giant + huge height and heavy brawny build + gray skin + wearing heavy wrought iron armor and heavy iron helm + long grey beard, high quality painting of character, 4k, trending on artstation, octane render, art by artgerm and greg rutkowski and alphonse mucha and craig mullins and James Jean and Andrei Riabovitchev and Marc Simonetti and peter mohrbacher