A lot of supernatural beings are described as having certain compulsive ways of behaving, which can be used against them. There are several varieties:
This is when there is either something magical that forces them to act compulsively, or some magical consequences for not doing so. Examples include a Magically-Binding Contract
that is in some way related to the nature of that creature.
This type, similar to the Real Life
condition known as Obsessive-Compulsive Disorder, is when there are unpleasant emotional consequences to breaking the compulsion, such as extreme anxiety. Heroic Willpower
may make it possible for them to overcome this.
This is when they act compulsively because they want
to act that way. Maybe it's really fun to laugh maniacally
or answer riddles or whatever, to the point where it's hard to restrain yourself from doing so.
This is when the character is apparently unaware of the consequences of following the compulsion. In these cases, it can be hard to distinguish from ordinary stupidity
, but a highly patterned way of outsmarting a certain kind of creature suggests some sort of compulsiveness. If this is present in AI, then it goes under Artificial Stupidity
and Politeness Judo
. Subtrope of Batman-Gambit
. Often a subtrope of Sanity Has Advantages
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Anime & Manga
- In Soul Eater, Death the Kid has a crippling obsession with symmetry, resulting in him stopping mid-battle to chew out one of his Weapons for being off center, going home in the middle of a mission to check whether the picture in his room was centered properly (it was), refusing to attack a symmetrical opponent and going berserk and obliterating an asymmetrical one.
- He manages to ignore such obsessions (specifically not freaking out about the line in his hair) when he needs to deal with Mosquito. But that arguably is a case of one compulsion being overridden by another - his need to create order between life and death.
- The Contractors of Darker than Black have to fulfill a "remuneration", which is a compulsion to do something after using their powers— and the compulsion is so powerful that they must do it (though it's never really explained what would happen to a Contractor who's unable to fulfill his or her remuneration). This can vary from folding the corners of every page in a book to drinking beer to breaking one's own fingers. The only exception is for someone whose mind is no longer in their original body; for example, Mao, who has the ability to possess animals and whose human body was killed, doesn't have a remuneration. This is why Hei doesn't have to pay any price for his ability: it comes from his dead sister's Soul Fragment.
- In One Piece, an entire species of birds (known as South Birds) compulsively face south and thus are used as compasses. At one point, the crew captures one and makes fun of it. The bird threatens to throw them off course and turns its head North...until it gets tired and turns back to south. It's also worth noting that there are North Birds as well, and will produce East or West birds through mating with South Birds.
- Teru Mikami of Death Note always uses exactly one page of the Death Note each day - no more, no less. This means that Near can replace the page that he uses on the day of the confrontation at the Yellow Box Warehouse weeks in advance. All of the other pages work, so the criminals that Mikami writes down keep dying and he doesn't get suspicious, but when he tries to kill Near and the rest of the SPK, he only confirms his guilt and Light's.
- He also follows a strict schedule without fail, so any weird action that he would do on a particular day would be a sure sign of something suspicious, Case in point, he went to the bank twice in one day, allowing the SPK member tailing him to find the real death note that was used to kill people.
- In the second Austin Powers movie, Mustafa feels compelled to answer any question that he's asked three times in a row.
- In Who Framed Roger Rabbit the titular hero is goaded into revealing his hiding spot when the Big Bad begins tapping out 'shave and a haircut' a gag that no toon can resist. This apparently isn't hyperbole as Roger fails to physically restrain himself and leaps through the wall and answers with 'Two Bits!'
- The evil leprechaun in the first Leprechaun had a compulsion to shine shoes. The characters are able to escape him a few times by throwing shoes in his path.
- Memorably subverted in the otherwise forgettable Dracula 3000. They've got the counter-intuitively named Orlock chained up, covered with knotted string and surrounded by spilled rice. When he gets released he reveals that he'd already undone the knots and counted all of the rice, so there's nothing to stop him from murderizing them all.
- Played with a fair bit in Terry Pratchett's Discworld, where methods to defeat vampires included mixing up their sock drawer (they would then have to pair and sort the socks), and forcing other obsessive-compulsive type behaviour. Another example would be the werewolves in The Fifth Elephant. Saying the word 'bath' actually gets them to wince, and throwing something has them automatically run over and grab it in a doggy-esque manner.
- In the first Artemis Fowl book, the titular Villain Protagonist uses the fairies' inability to enter a human dwelling without permission, compulsion to obey a human while in their dwelling, and inability to come back later to try get revenge to extract a lot of gold from them. They get around this by Loophole Abuse and sending in a non-magical troll.
Live Action TV
- In The X-Files episode "Bad Blood", Mulder diverts an attacking vampire by flinging a bag of sunflower seeds. The vampire is compelled to stop and pick them up. Mention is also made of the alleged vampiric compulsion to untie knots, such as tied shoelaces.
- In actual vampire folklore, the creatures ARE compelled to untie knots, or to count things. Putting knots in the grave or strewing newspapers about a victim's house, are ways to distract one. So yes, The Count is quite accurate in that respect.
- In Supernatural they distract a leprechaun (played by Robert Picardo) by spilling salt on the ground and forcing him to count them, giving them time to figure out how to banish him.
Myth And Legend
- Japanese kappa traditionally have a depression on the top of the head, which must contain water for them to have any power. Fortunately, they are compulsively polite and so if you bow to them, they will bow back - spilling the water and rendering them helpless.
- The Jiang Shi (Chinese Vampire) can be defeated by strewing anything small, such as grains of rice, in its path. It will be compelled to stop and count them.
- In Britain and Germany, you could often trick a changeling into revealing their true age by doing something really strange, usually boiling water in eggshells. Then they'd say something like 'I'm as old as the Eastern Woods, but I've never seen anyone boil water in eggshells before!' Some stories claimed that they'd give up the trick and be defeated just from saying something like that, others used it merely as confirmation before they tortured the changeling to get the true child back.
Tabletop Role Playing Game
- In the Old World of Darkness splatbook for were-cats, each tribe of cats had three or four unbreakable compulsions. As most of these compulsions were significant tactical disadvantages to the were-cats, they strongly discouraged their members from revealing these secrets to ANYONE. For example, one tribe of cats had to follow a line of salt. The effectiveness of this tactic when the cat in question was on large natural salt-deposits was not explored.
- In the new WoD, changelings who grow powerful enough suffer from "frailities", similar to the old stories about The Fair Folk. One may be unable to drink anything but alcohol, while another may have to dance when she hears a clock chime.
- The furry RPG Ironclaw has things known as flaws, physical or personality-based quirks that hamper one's abilities elsewhere. While external (physical) flaws don't fit into this category, internal (personality-based) flaws do, and are expected to be followed. Considering that said flaws are usually Lawful Stupid, Chaotic Stupid stuff, depending on how strongly you have that flaw, it can be very easy for opponents to exploit them to their advantage and overwhelm you.
- Khornates and orks in Warhammer 40,000 are murder machines in close combat, but easy to defeat if you outnumber and outgun them: just shoot as they charge into your guns.
- The Dungeons & Dragons supplement "Tome Of Magic" introduced the Binder Prestige Class. Binders make pacts with unique spirits called Vestiges to bind them to their body and use their abilities. Each Vestige has it's own "Influence" based on their personality and history which forces the Binder to act a certain way or take certain actions, such as killing or not killing certain types. For example, the Vestige Otiax gets agitated whenever it sees a closed door, and if it finds a key it has to find the lock the key opens. Some of the influences can be ignored, but you'll take a penality to your stats until you release the Vestige.
- Part of containment procedures for SCP-578-ARC-3 is covering the containment area with sand and painting a labyrinth on the floor, since the undead wight in question compulsively counts salt grains and traces labyrinth lines, slowing it down when it inevitably manifests. There was apparently some resistance to this kind of "folkloric strategy" at first among the scientifically-minded SCP researchers.
- In an episode of Danny Phantom, Desiree the Wishing Ghost is compelled to grant any wish she hears. Sam takes advantage of this to undo her mischief so that Danny can defeat her. In her first appearance, Danny ends up wishing her back into her bottle, lampshading that if he were smarter, he would have just done that in the beginning.
- Disney's Aladdin The Series had a Greek inventor character who compulsively revealed weaknesses to his inventions... tied to a compulsion to dictate notes to himself not to do that again.
- Bruce teaches Terry this in an episode of Batman Beyond.
- In ancient Egypt, cats were considered sacred animals, and to harm one meant bringing down a severe punishment on the offender, up to and including death. When the Romans invaded, rumor has it that one of their tactics was to have their front line carry cats out in front of them, gambling that this compulsion would prevent the opposing Egyptian army from striking through the cats to get at the Roman troops. As we all know from history, it apparently worked. This compulsion against harming the sacred animals shows up, of all places, in the first Mummy movie, where Branden Frasier's character scares off Imhotep with a cat.
- Autistic people of all kinds may exhibit this behavior, helpful or not.
- Ironically, holding cats (other animals work, but they like cats most, for obvious reasons) tends to make these tendencies less severe.