Krang's help. In the season 3 episode "Shredderville", the Turtles have a dream of a parallel world in which they never lived, and Shredder had no problem taking over the world; in that world, Shredder abandoned Krang after his conquest was complete, leaving him with no body and a heavily-damaged Technodrome. Krang's ultimate goal is to take over the Earth; it probably only became his objective after he was exiled on the Earth, but this point is never made clear. Every plan Krang conceives is either aimed at that goal, or towards the short-term objective of powering-up the Technodrome. He does not share Shredder's obsession with the Turtles and Splinter; while Shredder sees them as mortal enemies, Krang seems to regard them more like annoyances to be destroyed when they interfere in his plans. Counting from the first meeting between the Turtles and Shredder and Krang, Krang spent seven seasons in the Technodrome, either somewhere on Earth or in Dimension X, scheming to power up his battle fortress and take over the Earth. Eventually the Turtles managed to banish the Technodrome back to Dimension X without Krang and Shredder. At that point they began operating out of an old science building. Krang and Shredder eventually returned to the Technodrome in the season 8 episode Turtle Trek, but the Turtles destroy the engines of the Technodrome, trapping it and its inhabitants in Dimension X and putting an end to Krang's plans. Krang spent the next two years in Dimension X, until he was contacted by Dregg. Dregg arranged for him and Shredder to come back to Earth, to help him fight the Turtles. However, Dregg betrays them, and drains Krang's intelligence. Shredder escapes and restores Krang, but Dregg captures them again. Finally, the Turtles spoil his plan and transport Shredder and Krang back to Dimension X. In the series finale, Divide and Conquer, the Turtles return to the Technodrome to take Krang's android body, which they need to fight Dregg. Krang is nowhere to be seen, but it is assumed that he is still somewhere in Dimension X. IDW Comics In the IDW Comics Krang is both an Utrom and a denizen of Dimension X. He is the heir of Quanin, the former Prime Minister of the Utroms' ruling council who appointed himself Emperor and aggressively expanded the Utrom domain into an empire. However, his megalomanic expansion drive both deprived his