Palace of Shadow

The Palace of Shadow is the final area that Mario visits in Paper Mario: The Thousand-Year Door, where the Shadow Queen resides. It is found behind the Thousand-Year Door.

In this palace, the Shadow Queen possesses Princess Peach, who Sir Grodus had delivered to her. Mario drudged through the palace and its inhabitants, including the middle sibling in the "tail" family, Gloomtail. Mario later fought with the Shadow Sirens, who now consisted of Beldam, Marilyn and Doopliss. Soon after, Mario and company finally made it to the Shadow Queen's lair, where Sir Grodus was. Mario and his party fought Sir Grodus here, and after defeating him, and both King Bowser and Kammy Koopa, Sir Grodus retreats to the back to give Princess Peach as an offering to the Shadow Queen.