In Shredder's Hideout, Shredder was disappointed because of the fact that Baxter Stockman, Dogpound, and Fishface had failed on their mission. Stockman being blamed for this, pointed out a most recent invention he had been working on to use against the Ninja Turtles. The only thing was that he needed Dogpound and Fishface for this. Shredder agreed with Stockman's idea. This invention of Baxter Stockman was known as the Maze Of Doom.