The change of Superman
What if Superman became a villian? He had no morals and did not mind killing... who would be able to take him down.
Let's also say that he found a way past his magic vulnerability... he is completely immune to magic (magic vulnerability is on wonder woman level).
Let's say that kryptonite also doesn't have an affect on him... he is completely immune... does dc earth stand a chance.
Please don't bring up skyfathers or transtier characters.