What if DC Earth fell to The Flood...
In this senario, every single hero and villian on DC Earth has fallen to the omni-parasitic lifeform known as The Flood...
Thus, The Gravemind has acquired the knowledge, powers, abilities, and technology of every single being on DC Earth (including those who visit DC Earth regularly)...
Since the entirety of DC Earth has fallen, The Gravemind now has over 7 billion combat forms and millions of trillions of infection forms at its disposal...
Using the best of the best of DC Earths tech (as well as the staggering power of The Gravemind itself) The Flood begin to spread out and bring its taint to every corner of the DC Universe...
My question is this: who is the weakest character in the DC Universe who can stop The Flood and restore DC Earth to its previous non-infected state?