 When Sub-Prime learns that Krang was planning to wipe out the 2012, 1987, and Mirage Comics universes rather than enslave and mutate the inhabitants, he knocks Krang back to the 1987 universe before the 2012 and the 1987 Turtles temporarily defeat him by sending him to the Mirage Comics universe.In "Earth's Last Stand" it was revealed that Kraang Sub-Prime purchased the Black Hole Generator from Professor Honeycutt, who later came to regret his decision after he learned what the Kraang intended to do with it.The events previously seen in "Annihilation Earth" later played out in virtually identical fashion up until the future Turtles and their allies arrived to stop the Triceratons.