Brainiac and Lex Luthor’s complicated history explained before Man of Tomorrow

James Gunn announced in September that he was working on Man of Tomorrow, a follow up to Supermanthat would see Lex Luthor (Nicholas Hoult) and Superman (David Corensweet) teaming up against a greater threat.After months of speculation, Gunn confirmed on Dec. 20 that the threat will be Brainiac, played by German actor Lars Eidinger (Babylon Berlin, All the Light We Cannot See).