The Heartless are physical manifestations of the darkness within hearts, serving as the main enemies in Kingdom Hearts (2002) and Kingdom Hearts 2 (2006). They instinctively seek out and consume the hearts of worlds and individuals to multiply. They exist in two main types: naturally occurring Pureblood Heartless and artificially created Emblem Heartless.
Within the
Kingdom Hearts franchise, these creatures are drawn to the Keyblade, a weapon capable of releasing the hearts they have stolen. Defeating them in
Kingdom Hearts (2002) and
Kingdom Hearts 2 (2006) yields experience points, Munny, and synthesis items used for crafting. The lore behind their proliferation is tied to the experiments of Ansem the Wise and his apprentice Xehanort, who sought to understand the darkness.
The promotional demo
Kingdom Hearts 2 [Not For Resale] (2000) offered early players a hands-on preview of battling these adversaries prior to the main sequel's release. Throughout the series, iconic designs like the basic Shadow, the imposing Darkside, and various themed bosses have defined the visual identity of the franchise's antagonists. Their defeat is central to the journey of the protagonist, Sora, as freeing captive hearts ultimately prevents the collapse of the various Disney-themed worlds.