He's tried for years to kill Superman, but where did supervillain Lex Luthor first get that grudge? We'll go back to his beginnings in Smallville or Suicide Slum depending on which version of DC continuity you currently read. Let's go to Metropolis and learn about the man who would build a building in the giant shape of an "L!"
GHL 3 - Deathstroke
Slade Wilson is popping up everywhere! He's the villain of Arrow on CW, he terrorizes the kids of Teen Titans, and he's a boss in Batman Arkham Origins. But where did he get all those mad ninja skills so he can fight in three different mediums at once? We'll tell you the secrets of Deathstroke the Terminator, but make sure you don't tell anyone or you might end up dead!