The entire DC Universe has become playthings in the war that the villainous Insomnia is waging on Earth's superheroes, and in this week's Knight Terrors #4 (by writer Joshua Williamson, artists Giuseppe Camuncoli, Stefano Nesi and Caspar Wijngaard, colorists Frank Martin and Caspar Wijngaard and letterer Troy Peteri), we finally discover what Insomnia's grudge against DC's superheroes are, as well as what his secret origin means for the revenge that he wants on the Justice League and all of its kind.
Source：https://www.cbr.com/knight-terrors-insomnia-secret-origin-revealed/
