Kingdom Hearts (キングダムハーツ Kingudamu Hātsu) is one of the major entities in the Kingdom Hearts universe. It is the heart of all worlds, and the source of ultimate power and wisdom. It can be seen as the heart of everything. Due to its great significance, it has repeatedly been sought by the villains of the Kingdom Hearts series, in particular the series's main antagonist, Xehanort.
Powers and Stats
Tier: At least High 4-C | Unknown, but far higher
Name: Kingdom Hearts
Origin: Kingdom Hearts
Classification: Heart of all worlds, Unknown entity
Powers and Abilities: Unknown
Attack Potency: At least Large Star level (Capable of restoring hundreds of worlds and their stars. Xemnas merging with his Kingdom Hearts was able to get him around this level of power despite being partially destroyed, far above Zeus) | Unknown, but far higher (Xehanort seeks the true Kingdom Hearts so he can remake the entire universe in his image and cover all the worlds in darkness)
Wielder(s): Xemnas | None
Material or Element: Hearts of people that have turned into heartless's (KHll), hearts of entire worlds (KH:BBS)
Key: Kingdom Hearts (KH1 and KH2) | Kingdom Hearts (True)
Note: The reason for the second key for the True Kingdom Heart is that Xehanort plans to obtain both it and the X-Blade by clashing his 13 darknesses and the 7 lights. Once he obtains the real Kingdom Hearts, he plans to cover all worlds in darkness and from there recreate the universe in his image. Though this is all speculation from Xehanort as it is currently unknown as to what one can truly do should they obtain Kingdom Hearts and the X-Blade nor is it known to what scale of power it truly possess.