The ending of Insomnia's global nightmare may have freed the planet from his machinations, but it has also set up DC's next big villain. The ending of Knight Terrors: Night's End #1 (by Joshua Williamson, Howard Porter, Guiseppe Camuncoli, Steffano Nesi, Trevor Hairsine, Rain Beredo, Troy Peteri) saw Amanda Waller acquire not only the Nightmare Stone, a powerful tool that bridges the waking and dreaming worlds but also a new artifact: the Helmet of Hate, a dark mirror to the Helmet of Fate. What's even more disturbing is the way she gifted both to an unknown figure who merged them to become DC's new villain, Doctor Hate.
Source：https://www.cbr.com/doctor-hate-new-dc-supervillain/
