TMNT Season 7 Episode 11 - City Under Siege Episode Title:City Under Siege.Episode Description:The Cyber-Shredder hacks into the power-grid of New York, taking control of every electronic device in the city; effectively, conquering it. Meanwhile, the Turtles find that Hun and the Purple Dragons have been attacked. Once they realize that the Foot are behind the electrical problems, The Turtles battle through New York to restore the power grid. They fight the Cyber-Shredder and succeed in electrocuting him to death, causing the Foot to flee. However, once alone, the Shredder's body juts out a spike, impaling a wire and releasing an electric current into it.