Revert is.... an extension of Gary. In the beginning of my story Gary died a lot. At some point in time an extension was created and Revert was born. With the creation of Revert the Death Dimension came along with it, from there every thing that died teleported there. When Revert returned from Gary's world he used energy from void to create a cape that can travel through dimensions without using any energy. So Gary can do that now. When the Death Dimension left, certain things were left behind.... Which means.... connect the dots.