The Dark Atlantis phenomenon known as Breach is of grave concern to many parties throughout the multiverse. Monitoring and curtailing these incidents is considered a top priority of the Agency staff. While technical details are classified as NOT CLEARED TO KNOW CLASSIFICATION, the following information has been scrubbed for general Agency use.
The entities designated as Major Players are considered to be at the greatest risk of Breach. With additional power or knowledge, they would possess the means to rupture the divide between Dark Atlantis and the rest of existence. The results would not only be a disaster for the inhabitants of the city, but also any world that it came into contact with.
Archaeological evidence suggests that in the past Dark Atlantis has been intentionally driven to Breach, though this activity is now banned under the articles of the Third Astral Accord. Some of the signatories to the agreement (such as the Raven Queen) have made significant contributions to the Agency’s mission to stabilize Dark Atlantis since the fall of the Gerard lineage. However this support comes at the cost of eternal vigilance against the consuming darkness of Atlantis.