Crypt

The Crypt is first seen in the level Haunted Towers B-3 Graveyard Shift in Luigi's Mansion Dark Moon. It is where Luigi saves Toad from the painting and it is also Toad's first appearance in Luigi's Mansion Dark Moon.

B-3 Graveyard Shift
After Luigi retrieves all the pieces of the windmill door he will have access to the Hollow Tree. Soon after that Luigi comes to a mysterious door. E. Gadd will soon call Luigi to tell him that a key is needed to open it and that it is in the Crypt. Luigi then goes look for the crypt and instead of finding the key, he finds Toad trapped in a painting. Luigi will then use the Darklight Device to get Toad out of the painting. Toad will then say that Luigi is his hero and that he can't thank him enough. Then, Luigi and Toad will get out of the crypt and soon after that Luigi will face the Three Sisters(Lucinda, Belinda, and Herlinda).