Board Thread:General Discussion/@comment-11469381-20150127025543/@comment-4682609-20150206220359

Kanyone wrote: My take on it is that while Slash appears to have general concern for humans, Tiger Claw seems concerned only due to the fact that if the Kraang were to mutate the entire city and anihilate humanity, there'll be nothing left for the Foot Clan to control.

I think in Return to New York, Tiger Claw is pointing out to Shredder than there's no point to Shredder's plan of taking over the city if there's no humans to rule over. Shredder's fully aware of the Kraang's plans. He plans to destroy them once they've served their purpose in curing Karai.