The Garnet Star is the sixth Crystal Star, found at Pennington's home, the Poshley Sanctum in the game Paper Mario: The Thousand-Year Door. This was hidden in the painting at the Sanctum while a red herring—a fake one—was put out in the open to fool the Shadow Sirens and Bowser and his followers (only Bowser and Kammy weren't fooled— Pennington told them the Crystal Star they grabbed was a red herring). This Crystal Star will teach Mario the move "Showstopper", which costs 2 SP. To use this move, you must press the buttons in the order that they appear on the screen. If used correctly, it may defeat all on-screen enemies with one blow. Of course, this move won't work on bosses.