Looks a lot better after update. But I think that it's tiny main hero who acts evil, not boss.
It is quite hard to read. As the "game" info blends in with the "main pic and the background.
A few tips:
Up the contrast of the boss and fix the lighting
Use less saturation on the background so it'll move backwards
Use highlights in your "game" info or different colors, since you have 5 colors left to use...
I must say that the idea is funny tho