Superboy Prime, all around badass. Three legions of superheroes couldn’t take him out. Absorbed the selfdestruction of Monarch, and the sacrifice of a Guardian of the Universe, broke through a 300 meter thick wall of pure willpower projected by dozens of Green Lanterns, beat Io, carved the S shield in his chest with kryptonite, beat two Supermen after being dragged through a Red Sun !!
