Here comes the most anticipated segment for comparison of these two characters i.e. Supergirl vs Grim Reaper 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 Grim Reaper powers, abilities, weapons and gadgets. So lets check out Supergirl Powers and Grim Reaper Powers.Decide who is more powerful!