Superman and Supergirl take on the cybernetic Brainiac, who boasts that he possesses "the knowledge and strength of 10,000 worlds."

Director: Bob Goodman, Geoff Johns

Cast: Matt Bomer, Stana Katic, John Noble, Molly C. Quinn, Diedrich Bader, Jason Beghe, Frances Conroy, Ian James Corlett, Melissa Disney, Alexander Gould, Sirena Irwin, Will Yun Lee, Andrea Romano, Stephen Root, Wade Williams