Here comes the most anticipated segment for comparison of these two characters i.e. Supergirl vs Mirror Master (McCulloch) superpowers. Powers and abilities define their strength, both physical and mental. So what will happen if these two super characters engage in a fight? Here you can compare Supergirl vs Mirror Master (McCulloch) powers, abilities, weapons and gadgets. So lets check out Supergirl Powers and Mirror Master (McCulloch) Powers.Decide who is more powerful!