Heartless: Difference between revisions

{{Q|Your past endeavors did prevent an immense effusion of Heartless from the great darkness; make no mistake about that. However, the Heartless are darkness made real---and darkness lingers yet in every heart. The Heartless are fewer. But while darkness exists in a single heart, it will be difficult to eliminate them.|Yen Sid}}While the Heartless were not researched with the intent of creating a fighting force, their very nature as manifestations of the destructive force of darkness made them naturally suited for conquering and destroying the various worlds. Their natural ability to travel to various worlds through the use of Corridors of Darkness makes it virtually impossible to fully defend a world from Heartless, and the method in which they are created and exist make it practically impossible to cut them off at the source. Even fighting them once they appear is made difficult due to their immunity to standard weaponry.  

While sealing a world's Keyhole will save the world itself<!--source-->, it is still possible for the Heartless to appear on the world and hunt the people themselves. For example, even though the great Door to Darkness at The Radiant Garden was sealed by Sora in ''Kingdom Hearts'', the Heartless were able to remain on that world even after the destruction of the End of the World and the restoration of the worlds, and propagated to form a gigantic siege engine of over a thousand Heartless.