The Batman corner of the DC Universe has a lengthy history of introducing unexpected wildcards. While Batman and many of his allies remain firmly heroic, other figures like Harley Quinn and Red Hood have proven ready and willing to shift their morality given various circumstances. Now, one of Batman's most dangerous allies has formally left the fold, and could become a threat to the entire hero community.
Source：https://www.cbr.com/batman-inc-ghost-maker-turn-dc/
