Rocksteady Studios is set to release Suicide Squad: Kill the Justice League very soon, and since it takes place within the Arkhamverse, many DC Comics fans will likely be nostalgic seeing Batman and these characters again that featured in Rocksteady's Batman: Arkham trilogy. Yet, there is a black sheep within this series developed by WB Montreal, that of Batman: Arkham Origins, which features as a prequel to Batman: Arkham Asylum, and whether it's canon or not has been a subject of debate in later years.