S04E18 - Slash - The Evil Turtle from Dimension X
Synopsis
Krang and Shredder are working on some super mutagen which they plan on using to create an army of super mutants that will take over the world. Bebop and Rocksteady decide to try the mutagen out on Bebop's pet turtle. The mutagen turns him into an evil Mutant Ninja Turtle, named Slash. When Slash starts destroying the place, Bebop and Rocksteady send him to Earth.
Fenton Q. Hackenbush, a developer for Donald J. Lofty, has a plan to do away with the sewer system and build condominiums. The Turtles find out what Fenton is planning and try to stop him. They phone April and make arrangements to meet and talk about Fenton's plans.
Meanwhile, Slash is looking for the palm tree from his water bowl on Earth, which is where Bebop and Rocksteady have told him it is. While looking for it, he meets Hackenbush. Hackenbush tricks him by saying he will show him where there are lots of palm trees if Slash will do something for him. Hackenbush tells him that he has to smash the Freedom Bell and everyth