The Fungeon is King Candy's personal dungeon in his castle. It was prepared especially for Vanellope (and other intruders) while he was ruling Sugar Rush. Both Vanellope and Felix end up thrown into the fungeon by King Candy and his lackeys. There is a room named the "Glitch-Free room" which has glitch proof chains for Vanellope, and is decorated with crying animals and clowns with the words "Someone's been naughty" and "Bad girl" on the walls.
Fix-It Felix in one of the fungeon holding cells.
Ralph breaks down the door to rescue Vanellope.
Vanellope in "Glitch-Proof" chains.
Ralph and Felix plan to save Vanellope from the fungeon in one of the book adaptations.
Fix It Felix giving Wreck It Ralph a hug in the fungeon