Batman. Obviously. Actually
Batman with the green lantern ring. And let's throw in the Kryponite ring too, just for good measure.
So why not just give the Green Lantern ring to batman, the obviously strongest will in our galaxy?
Because he keeps accidentally using it to create living images of all his loved ones who have died.
Starting with his parents.
Stuff like that is just a little too messed up for the Lantern Corps.
So no Ultimate Batman for us.
