1st Appearance of Brainiac (robotic body); 1st Appearance of Lex Luthor (in armor); Origin of Brainiac (robotic body); Origin of Lex Luthor (in armor)
Luthor Unleashed!; Rebirth!
Writers: Cary Bates, Marv Wolfman, Jerry Siegel
Artists: Curt Swan, Gil Kane, George Pérez, Ed Hannigan, Joe Shuster