Knight Terrors has been focused on the internal fears of DC's heroes and villains, set off by Insomnia's plan to locate the Nightmare Stone. Some important figures -- like Batman -- have done their best to overcome these challenges, confronting the threats locked deep within their minds. Others have been less confrontational and more accepting, with Poison Ivy and the Joker seemingly giving in to their new internal "homes." A few have even resisted the effects entirely, like Zatanna and Robotman.
Source：https://www.cbr.com/mary-marvel-shazam-captain-black-adam-knight-terror-dc-comics/
