Peach's Castle Dungeon

Princess Peach's Castle Dungeon is a dungeon in Princess Peach's Castle. It appeared in Mario & Luigi: Partners in Time. When Mario, Luigi, Baby Mario and Baby Luigi came here, they found Fawful, however only the babies got to talk to him. The babies could trade Beans to him for Badges. They can only come here by using a Blue Warp Pipe, instead of stairs.

Interestingly, it is unknown if the Mario and Luigi: Partners in Time version of the dungeon is actually supposed to be a dungeon, as Save Albums in the past version of Princess Peach's Castle Dungeon refer to it as Peach's Castle Cellar. In Mario and Luigi: Partners in Time, the dungeon itself actually bears more resemblance to a sewer than anything else.