ACTION COMICS (1938) #355

Who is the one man Superman fears more than any other? Who can send the Man of Steel running for cover…even force him to abandon Earth? You’re in for a stunning shock when you meet the outlaw even the Kryptonian crime-buster can’t tackle! The Mighty Annihilator! (Superman vs the Annihilator, with Perry White / written by Leo Dorfman) The Death of Luthor! (Supergirl vs Lex Luthor / written by Jerry Siegel : reprinted from Action Comics #286) « Who is the only man Superman fears? » Superman (thought): There he is……