Master Shredder - The Next Mutation

In The Next Mutation, Shredder is still the Turtles' sworn enemy. This time however, Venus uses her powers to make the Oroku Saki from within take control of Shredder's mind. After the Foot Clan disbands, he ends up living on the streets. Later, the Dragon Lord's rank warriors attack him to get a medallion that was in his possession. Splinter saves him and takes him to the Turtles' lair to protect him. It was hinted that Shredder might possibly go back to his old ways, but the show was canceled soon after that episode.