The Unretrograde-inator was a device created by Heinz Doofenshmirtz in Operation Crumb Cake. He made it to try and stop Mercury in retrograde. It was fired at Norm, who proceeded to do his morning routine backwards, until it wore off when he was trying to "unbrush" his teeth. It was also fired at Phineas and Mrs. Ferguson, which made Mrs. Ferguson take back Isabella's letter from Phineas and made Phineas tear down his Giant Work of Art. In the end it was destroyed by Perry, as he activated the coin-operated Self-Destruct Button with a nickel.