 When the Turtles attempt to thwart their plans, they and the Kraang end up battling beneath New York and in the Kraang's interdimensional portal network.In the end, the Turtles are able to send the Kraathatrogons back into the portal network, with one of them that ate Shredder's new right hand Tiger Claw ending up in the universe of the 1987 Ninja Turtles animated series.There, the rampaging creature came under attack by the 1987 version of the Turtles before Tiger Claw ripped his way out of it, and after fighting against them eventually made it back to the 2012 universe.