Santa Prisca
O'Neil had previously created Bane's birthplace of Santa Prisca in "The Question" and the drug Venom in the storyline of the same name (published in the pages of "Legends of the Dark Knight" #16–20, and later reprinted as a trade paperback). In the pages of "Azrael", O'Neil introduced Bane's perception of Venom as both an addiction and the weakness responsible for his earlier defeats.