Teen Titans / Legion Special #1

Superboy and the Legion - Superboy and the Legion part 2 The Fatal Five now appear to be the Fatal Five Hundred! A hundred copies of each of five deadly villains face the Legion and their allies, the Teen Titans! Fortunately, Brainiac has a plan. Two speedsters will race on the cosmic treadmill and generate vibrational energy. When this resonates with the Persuaders' atomic axe it will reset the molecular structure of each copy of the Fatal Five, sending it back to its home. But, an unforeseen effect: the axes release energy as they shunt, which disconnects the Legion from its own space time....