- “Are you ready for tales that will shatter your spine and boil your blood!?”
- ―Maude Flanders as a hideous ghoul[src]
The Simpsons and Ned held a seance in order to contact Ned's dead wife, Maude. While they prayed, Bart came in dressed as Maude's ghost and found out that Maude's real ghost was behind him, which startled everyone. Homer and Ned admired Maude, but they're terrified when she turned into a hideous ghoul, with the exception of Lisa who wasn't afraid of her because of her skepticism.
- THOH – "Treehouse of Horror XIII"
- THOH – "Treehouse of Horror XXII"
- Episode – "Holidays of Future Passed"
- Episode – "Them, Robot" (Seen in couch gag)
- Video game – The Simpsons: Tapped Out
- Episode – "Monty Burns' Fleeing Circus"
Characters in the Treehouse of Horror series
|Treehouse of Horror|
|Evil House ● Kang ● Kodos ● Serak the Preparer|
|Treehouse of Horror III|
|Treehouse of Horror IV|
|Flanders the Devil ● Grim Reaper ● Count Burns ● Gremlin|
|Treehouse of Horror V|
|Mister Peabody ● Sherman ● Jason|
|Treehouse of Horror VII|
|Hugo Simpson ● Pigeon-Rat|
|Treehouse of Horror IX|
|Treehouse of Horror X|
|Clobber Girl ● Stretch Dude ● The Collector ● Xena the Warrior Princess|
|Treehouse of Horror XI|
|Baby Bear ● George Cauldron ● Goldilocks ● Daddy Bear ● Mummy Bear ● Rapunzel ● Troll ● Suzanne ● Snorky|
|Treehouse of Horror XII|
|Gypsy ● Hobgoblin ● Leprechaun ● Yoda ● Ultrahouse 3000 ● Harry Potter ● Lord Montymort ● Slithers|
|Treehouse of Horror XIII|
|Homer's clones ● Peter Griffin ● Billy the Kid|
|Treehouse of Horror XIV|
|Jonathan Frink Sr. ● Grim Reaper|
|Treehouse of Horror XVI|
|David ● Cyborg Bart ● Witch|
|Treehouse of Horror XVII|
|Dr. Phil McGraw ● Female Golem ● Male Golem|
|Treehouse of Horror XIX|
|Airport Stair Bot ● ATM Bot ● Bestimus Muchos ● Carnage Destructicus ● Coffee Machine Bot ● Hot Dog Oven Bot ● Kitchen Bots ● Melody ● Microwave Bot ● Nacho Bot ● Plane Bot ● Sedan Bot ● Sex Toy ● Snooze ● Squishee Machine Bot ● Three-Way ● Toaster Bot ● Grand Pumpkin ● Tom Turkey|
|Treehouse of Horror XXIV|
|The Fat in the Hat ● Strong-Man Homer|
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