Teen Titans by Geoff Johns Book 3
Superboy has been taunted by the secrets of his DNA--that he's a clone created from Superman and Lex Luthor. But who cloned him, and why? Meanwhile, the Titans and the Outsiders are rocked to the core as they face two of the most powerful villains in the DCU in an all-out war to destroy the young teams! Alliances will change and bonds will be broken as the teams face their greatest challenge to date.
Collects Teen Titans #20-26, #29-31 and Outsiders #24-25.