Legion of Super-Heroes #0

Synopsis

Shortly after their founding, the Legion responds to a distress call from Colu. Somehow, the long dormant Brainiac technology has been released from its vault. The Legion must repel the weapons that emerge from the vault and protect a rare Coluan infant. But they fail to realize that a thief named Tharok has entered the vault and has been radically transformed before Ultra Boy is able to toss the vault into space where it can safely be dismantled.