The cast included new and different characters, such as Bebop and Rocksteady and the Neutrinos. Original characters such as Splinter, Shredder, and the Foot Soldiers stayed true to the comics in appearance and alignment only. Instead of being Hamato Yoshi's mutated pet rat, Splinter was a mutated Hamato himself. The Foot Soldiers changed from human ninjas to an endless supply of robotic grunts, allowing large numbers of them to be destroyed without anyone dying (this was a very important decision in terms of the show's child audience; excessive violence would have alienated parents of children, the show's target demographic). Krang, one of the series' most memorable villains, was inspired by the design of the Utrom, a benign alien race from the Mirage comics. The animated Krang, however, was instead an evil warlord from Dimension X. Baxter Stockman, whose race was changed from black to white, was rewritten as a shy and meek lackey to Shredder, later mutating into an anthropomorphic housefly. During the final two seasons of the show, the lead villain switched to Lord Dregg, an evil alien overlord bent on world conquest by trying to distract the public into believing that the Turtles were the enemy instead of himself.