The city is unsafe again, with the likes of this ominous presence: Supermutant Rocksteady. Posessing the power of 2500 ordinary street punks, Supermutant Rocksteady rumbles through the sky, spreadig havoc wherever he goes. It's the kind of havoc that Supermutant Shredder would be proud of: total devastation...thanks to one mighty blast from Supermutant Rocksteady's spring launchin' grenade gun. And the Supermutant Turtles don't stand a chance against Supermutant Rocksteady's double trouble spiked bar. With Supermutant Rocksteady, chaos is the rule of the day and mayhem the law of the night. So dig in, if you're rootin' for the side of good; you best change your mind, cuz there's a new breed of Supermutant bad boy - and he goes by the name of Supermutant Rocksteady.

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