Lovely
Nice! I think you pulled off what you were going for, this is awesome, i love his anatomy and the action, the weapons are also nice.
Alot of people may say to add a background, but i feel a background can sometimes ruin the image if you dont do it right. So kudos
Maybe hes a 4th dimensional being, traveling through time, thus its white, his almost robot look with they eyes, are alien and really let me ponder on other characters and time era stuff