WHO IS INSOMNIA? Hello, ghouls and ghosts! This is Boston Brand, a.k.a. Deadman, and Iâll be your supernatural tour guide across the Knight Terrors stories! After that fancy special oversize issue you have to read first, the whole world is trapped inside their nightmares, and Batman and I are trying to figure out who Insomnia really is...and why he wants revenge on the heroes of the DC Universe!