Will Arnett Joins Michael Bay's 'Teenage Mutant Ninja Turtles' Reboot: Is He Playing Shredder?

Is Will Arnett playing the Shredder in Michael Bay's Teenage Mutant Ninja Turtle reboot? No, probably not. But you're intrigued now, aren't you? With the voice cast of the turtles already announced and the big news that Megan Fox and Bay had settled their differences so the actress could play April O'Neil, news broke on Monday that Arnett had joined the production in an unnamed role.

Any guesses at who Arnett will be playing? Could we see a Ninja Turtles-Arrested Development crossover?