Krang (Out of the Shadows)

"Look out earth, it's playtime!"

- Krang doesn't see people's lives more than toys "Let me give you a hug! (tries to crush Michelangelo to death)"

- Krang's cruel sense of humor Krang is the true main antagonist of the 2016 live-action sci-fi comedy film Teenage Mutant Ninja Turtles: Out Of The Shadows. He is an alien warlord from another dimension seeking to conquer ours. He had sent three components of a machine to our dimension that, when united, would open up a portal to his dimension. Krang is voiced by Brad Garrett.

Unlike Shredder, who is a strict no-nonsensical killing psychopath, Krang is a sarcastic childish jokester who often makes punchlines, making him similar to Michelangelo.

History
When Shredder got hijacked while attempting to escape by teleporting, he was transported to another dimension where he met Krang. Krang provided him with a mutagenic compound in exchange for his promise to find three components of a machine Krang sent to Earth years ago that open a portal to his dimension when united.

After Baxter Stockman completes the portal device, Krang emerges with his war machine, the Technodrome. Shredder then demands that he earn his control over the earth now, but Krang refuses and claims earth all for himself as his own toy to play with. Krang then betrays Shredder, freezing him and locking him away with his collection of other defeated foes.

The Turtles then confront Krang aboard the still-assembling Technodrome and engage him into a fierce fight, wich they finally wins. Then they locate the beacon around which the Technodrome is assembling and hurl it back through the portal, taking Krang and the rest of the Technodrome with it while April, Casey, and Vern then shut the portal down. As he disappears, Krang swears he will return for revenge.