User:CaptainCj

Kingdom Hearts can be returned in Sonic the Hedgehog 4, where it has been mechanized by doctor Eggman into a power source for Egg Moon to make a new version of the Death Egg, which can be seen in Act 3 and the boss act of Sylvania Castle Zone and boss act of White Park Zone. Kingdom Hearts appears to be smaller than the. The new Death Egg is a hollow sphere built with the Egg Moon above and around Kingdom Hearts similar to a Dyson sphere, the hypothetical Dyson sphere is designed to absorb energy from a star; this, presumably, is also the method which Eggman uses to power his latest space station. Sonic and Tails defeat Dr. Eggman and Metal Sonic and the Death Egg mk.II Zone's power drains out leaving Kingdom Hearts still trapped inside it.