Horror Hunger

"I HUNGER"

"I want something's FLESSSH!"

- Withnail, Withnail and I (It Makes Sense in Context)

The human body is a remarkable machine, but it doesn't just run on energy. Ask any dietologist: it requires vitamins, minerals, and a plethora of other substances in specific doses to run at peak efficiency. So what, pray tell, does a supernatural or alien being require to operate at its normal, super human efficiency? Why, humans!

These creatures don't just need to feed on humans to get their powers or keep a human shape, but very likely to survive. And to make matters worse, this humanitarian diet comes with a relentless, insatiable, and ultimately irresistible hunger. This is the driving force behind a lot of the evil in supernatural creatures. The Horror Hunger can only be sated by feeding on (parts of) other humans; [non-human] animals are rarely a viable substitute, and if they do work, they taste horrible. Sorry, Friendly Neighborhood Vampires.

Speaking of vampires, any person unwillingly changed due to a Viral Transformation and trying to be a "good" vampire, werewolf, or whatnot will have a very hard time of it, since starving themselves will likely cause them to lose control and attack the nearest person, loved one or not. If they're being starved by enemies like The Hunter, this is an incredibly effective and cruel torture. These supernaturals trying to be good will also have another hurdle to cross... Evil Tastes Good, and Delicious Distractions are everywhere. So not only are they starving themselves, but they're like hungry children locked in a candy store... where the candy is people. Even in cases where the supernaturals don't need to consume humans to survive, the Horror Hunger creates conflict and provides an explanation for why the Friendly Neighborhood Vampires find it so hard to quit.

The hunger isn't always for humans, or humans per se. At times, it can be for Phlebotinum, especially if it has to be harvested from humans, like with Liquid Assets or Life Energy. Even if it's a hunger for something that doesn't harm humans directly, it can still be extremely dangerous. Perhaps feeding somehow damages the environment, the addictive elements and danger of death are still present, and/or it likely causes With Great Power Comes Great Insanity. The Phlebotinum Muncher and Psycho Serum addict likely suffer from Horror Hunger regarding their choice substance.

Take all of this and take it Up to Eleven if exposed to someone Supernaturally Delicious and Nutritious. Now add in a skimpy neglige if Hemo-Erotic is in play. See also Food Chain of Evil when it applies to other kinds of monsters. Often part of the Virus Victim Symptoms. A group of beings trying to control their Horror Hunger may form a Monsters Anonymous group to try and cope.

Oh, and in case it isn't obvious, expect the Horror Hunger to be used as a metaphor for addiction.

Anime and Manga

 * When souls become Hollows in Bleach, they are driven by an eternal and insatiable hunger to devour other souls, living or dead. However, when the void within an ordinary hollow's heart becomes so much that human souls are incapable of sustaining it, the hollows are driven to cannibalize other fellow hollows. This usually results in the evolution of a bigger, larger hollow.
 * In the Fullmetal Alchemist anime, when homunculi are injured they start losing human appearance and power and develop a ravenous hunger for red stones. It doesn't seem to actually be necessary, and before they've had any they don't even want it. The manga version has something similar, but the philosopher's stones are easier to get for them, balanced by taking heavier damage to the point where
 * The Shadow Angels in Genesis of Aquarion must harvest human Life Energy to survive.
 * In Animerica, Kiyone has an insatiable appetite for human blood and occasionally flesh. In fact, Lita recalls a moment where she caught him VORACIOUSLY eating what appears to be a torn carcass.
 * Homunculi in Busou Renkin are, as a rule, required to eat human beings in order to live. Victor, the sort of Big Bad of the series, takes this a step further. He unconsciously drains the Life Energy of everything around him. Plants, animals, people, everything. For him, feeding in this manner is the same as breathing. Directly after Victor's introduction, it's revealed that is slowly becoming like Victor and will be subjected to this same Horror Hunger.
 * Worthy of note is that, after his initial frenzy of devouring his family/servants, Papillion never needs to eat again. Eventually another homunculus determines that the hunger is out of a desire to become human again - which Papillion (who made himself into a homunculus) doesn't have.
 * Magical Record Lyrical Nanoha Force has the Eclipse infection, which not just gives the infected a hunger for humans, oh no. It goes straight to the point and gives one an insatiable hunger for killing people. Trying to fight against this hunger will make one lose control, and if you still fight against the hunger at that point, the infection's Healing Factor will completely go out of control and turn the infected into a lump of flesh.
 * In Claymore, Youma and Awakened being can only eat pure human entrails. The most powerful ones are also the most hungry.
 * In Trinity Blood, the Methuselah can normally keep their thirst for human blood under control using an artificial substitute. However, sadistic enemy Dietrich once got Ion to go horrifically bloodthirsty while locked in a cell with good friend Esther.

Comic Books

 * The medical condition that drives Clayface III to reduce people to pools of protoplasm in the Batman comics.
 * Dead High: Yearbook - An anthology of horror stories about typical teenagers thrown into not-so-typical situations. In one story a limp-noodle of a man and a fat, ostracized girl take experimental drugs that end up giving the man muscles and make the girl lose weight rapidly. However, with each passing day, the drugs work too well: the girl keeps getting thinner and thinner no matter how much she eats and is constantly hungry, and the man's muscles keep growing to the point he is hardly able to move and unable to control his anger. In the end, unable to control her hunger anymore, the now anorexic girl transforms (via body horror) into a giant, tape-worm like creature that proceeds to eat the guy before his muscles make him explode.
 * The zombie superheroes in Marvel Zombies often refer to the Hunger as something that controls them.
 * The Wendigo monster in the Marvel Universe, based on the Real Life Algonquian legend.
 * Marvel vigilante Cloak has this for a vaguely defined kind of human Life Energy, represented as light. It's generally not an issue because his partner Dagger naturally generates an excess of the stuff, but on one occasion when she'd abandoned him he came near to killing several innocent people.
 * An early (possibly the first?) Hellblazer story featured a "famine demon" who would cause people to develop an insane hunger not just for food and drugs but also clothing and jewelry (what can I say, it's The Eighties). The source of the demon was eventually discovered to be
 * This is referenced in the film Constantine when
 * Moral: "if you want to avoid a horrific death or worse, don't make friends with either John Constantine."
 * This condition afflicts Ultimate Venom. He swallows people whole. He once did this to a horse, complete with rider. One issue used this for the weirdest Forrest Gump Shout-Out ever: the people he's talking to on the bench are different every time because he keeps eating them. There's also a bit of Hammerspace, or maybe just ridiculously rapid digestion, going on, as immediately after eating them there's no visible difference.
 * Less so with main Marvelverse Venom. While main Venom does require a chemical compound found in few locations outside of the human brain to survive, and he begins getting cravings if he goes too long without it, one of the few other locations the compound can be found is chocolate. Yes, a Horror Hunger for either brains... or chocolate. Either one works.
 * Ultimate Carnage is even worse: he assimilates people's DNA to try to complete himself, the process of which leaves them drained, skeletal husks. Because a writer got the two mixed up, the main universe Carnage also displayed this trait once--or so we're told; it mostly just served to make Luke Cage look tough by easily resisting it.
 * Since she actually cares about the lives of other lifeforms, Galactus' daughter Galacta considers the hunger for Life Energy that comes with being an embodiment of the Power Cosmic to be this. To ease her conscience, she limits herself to eating the alien microbes and bioweapons that appear with alarming frequency on Earth since they don't belong there anyway. However, this isn't nearly enough to satisfy her hunger pangs which are almost as strong as her father's (who has to eat entire planets to briefly satisfy his hunger). She spends every moment of every day on Earth searching for more alien food while resisting the temptation to gorge herself on the literal tons of food surrounding her. It Got Worse when she discovers a "Tapeworm Cosmic" parasite inside her feeding off of her power and exacerbating her hunger. She gets so desperate she briefly considers creating a planet to eat from scratch using Wolverine's DNA as a template to give it a regeneration factor. Galacta doesn't go through with it; reasoning that it would be way too immoral to create an entire world just to use it as a buffet. In the end, she is driven to use the Ultimate Nullifier on herself in an attempt to destroy the Tapeworm, knowing and not caring in the least that this could destroy her as well (the Nullifier is one of the only things in existence that can kill beings like Galactus and Galacta).
 * According to Sage, vampires in Marvel comics can't stop feeding on people even if they want to. "Oh I do, Blade. You have no idea what the hunger's like. It controls you... makes a puppet of you. There's no way to fight it." Most don't have enough sense of morality or even former human personality to care, but those that do hang on to their former selves experience this trope in full.
 * That said, a certain mystical pool, the 'Penance Pool', allows those vampires who seek it to overcome the bloodlust and be cleansed of their guilt, as did the group of vampires known as the Forgiven.

Fanfiction

 * An interesting case- in Downfall the "villain's" troops are largely composed of a race of cannibalistic predators who hear voices urgeing them to 'Kill/Devour/Destroy'. Due to the nature of the villains, most of the named characters of that faction are of the sort who strive to overcome this instinct. The Heroes, on the other hand, would wipe out their opponents if given the chance; and, following one of the early battles, are actually shown executing the wounded that were left behind following a desperate retreat. What the hell, hero?

Films -- Live-Action

 * Lifeforce. When a human was drained of Life Energy by a space vampire, it would awaken 2 hours later and have an overwhelming need to drain Life Energy from another human once every two hours thereafter. This also occurred with the humans drained by other humans, leading to an epidemic of Life Energy draining zombies wandering around.
 * In Madagascar, Alex could not resist viewing his zebra friend as a snack when overcome with hunger pangs. He gets better after eating fish.
 * Slither has the parasite hosts (and the leader of the Hive Mind) suffer from massive hunger for meat, to the point where they'll eat ANYTHING, be it dog, cat, horse, sheep, cow, human...
 * Return of the Living Dead establishes that zombies have to eat brrraaaaiiiinnnnssss to quell the terrible pain of being dead.
 * In Return of the Living Dead 3, the hero's (undead) girlfriend loves her boyfriend so very much, but she's so hungry all the time, and the kibble at the local Circle K isn't cutting it. She feels much better after going berserk and tearing into some street toughs, though.
 * Vampires in Daybreakers get increasingly deranged and mutated (into the kind of giant man-bat that Dracula is famous for) the longer they go without human blood. Starve them for long enough, and they'll not only start trying to feed on other vampires, but even themselves.
 * Modern Vampires (aka The Revenant) explores the vampire side of this trope. It ends with the vampires - the good guys - turning Van Helsing and leaving him to contemplate the horror of his new bloodlust.
 * Feed me, Seymour! Feed me now!
 * The Deaths of Ian Stone approaches this as a literal addiction--Harvesters can survive just fine on ordinary fear, but the rush from slowly murdering someone is quite an amazing experience, and hard to wean oneself off of.
 * Rapper Brotha Lynch Hung, known for Humanitarian-themed lyrics, made a movie called Now Eat in which he plays a gangbanger who is cursed by a witch to eat everything he kills... I.E., other gangbangers.
 * Played for Laughs in Suck. The film manages to make dismembering Moby Bloody Hilarious.
 * The Silicate in Island of Terror only eat human skeletons. While the victim is still alive.

Literature
"Ax: 
 * Gerald Tarrant in C. S. Friedman's Coldfire Trilogy can function as a kind of vampire if he really needs to, but his true needs are more complex: nightmares, coldness, darkness, and everything humans fear. To survive an ocean crossing in which he is deprived of his usual sustenance, he inflicts terrible nightmares on his stalwart companion Damien Vryce -- with the latter's agreement, because they've teamed up to fight a worse evil.
 * Death in Paradise Lost "with eternal famine pines."
 * Shelob from The Lord of the Rings is described as only desiring "death for all others, mind and body, and for herself a glut of life, alone, swollen till the mountains could no longer hold her up and the darkness could not contain her."
 * Which, come to think of it, sounds like the way Satan craves souls in CS Lewis' The Screwtape Letters.
 * Worse than Shelob was her mom, Ungoliant, from The Silmarillion. She literally ate the life of the two Trees of which the sun and moon are but fruits, and was still so hungry for gemstones that it scared Morgoth. She would have eaten the Source of All Evil had he not been rescued by an army of balrogs. She must have either died of starvation or old age some time afterward.
 * Or (as the text implies) she finally attempted to devour herself.
 * The centipede-like Taxxons from Animorphs are a chilling example. They're constantly plagued by a hunger so fierce that even the Yeerks apparently controlling the Taxxons can barely restrain it. Such is its severity that they'll even eat each other to satisfy it.
 * In fact, some Andalites commented that Taxxons will even eat parts of themselves if they're wounded and there's no other viable option.

Jake: 

Ax: "


 * In Twilight, it's a metaphor for sex and lust. Not a very convincing one though, as the happily married couples seem to get it on regularly.
 * Premarital sex, that is.
 * Mercedes Lackey's Children of the Night has an Unwillingly Evil character (Lackey's major characters come in three flavors: absolutely Good, absolutely Evil, and about-to-pull-a-Heel Face Turn) who has been converted into a psivamp; he can only survive by empathically causing and feeding on strong negative emotions, rage and fear etc, in people. He can't control it very well, so they either die or "burn out", which is implied to be worse. The hunger is described as being ravenous and directly connected to his empathic ability, and even when he feeds it it's never really quiet. He tries to feed only on the attack junkies and rapists of New York, preying on the predators, but the hunger doesn't distinguish between these people and their victims, and he knows he won't be able to do this for long before he loses control. At the end of the book, after helping the heroes take out the Big Bad whose side he started on, he commits suicide.
 * Vampires in the Laura Caxton series can survive without blood, albeit as rotting corpses, but the rush it gives them is addictive beyond anything humans have created. If someone nearby is bleeding, they're almost incapable of resisting the urge to attack, a fact that can be used against them.
 * Interesting example: Harry Dresden's incubus half-brother, Thomas, once gave a vivid demonstration of what resisting his own inborn Horror Hunger (desire/life force) is like. After racing Harry along the beach long enough that both were sweaty and overheated, and very thirsty, he knocked Harry's water bottle out of his hand the second a drop of water touched his lips.
 * In the Night Huntress series, newly turned vampires can think of nothing but their hunger and will shred anything with a heartbeat to sate their thirst. As they age, they gain self-control, but a starved vampire may revert to this condition. Throughout the series, several characters are shown just starved enough to lose control, but aware enough to be horrified by themselves as their friends try to restrain them.
 * The hunger itself is described in excruciating detail on several occasions in Oleg Divov's Night Watcher (it's a vampire novel, so that's par for course of course). Every vampire eventually either manages to beat the addiction and transcend to a new evolutionary level or become a hideous degenerated mindless monster that hunts in packs (it's both more and less Anvilicious than it sounds, and is pretty self-conscious about it).
 * Obscure example or not, it must be mentioned due to the very unusual handling of this trope: Curse of the Transhumans gives us the titular transhumans. They're extraordinarily smart, deliberately Uncanny Valley in appearance, and they eat humans. Psychologically speaking they are all also by and large sadists who enjoy eating humans while they're alive for fun and think children are the most wonderful food because they freak out so beautifully (even though they aren't big and thus yield little food). The interesting thing is that there's no attempt to humanize them or play this as a metaphor for addiction, they're just straight up evil, unrepentantly and happily so. It's VERY effective.
 * While it's not actually necessary for their survival, the carnivorous impulses of werewolves in the Mercy Thompson series can get out of control if they're in the presence of blood or fresh meat. It's considered remarkable that one of the lead characters manages to work as a physician, because other surgeons or veterinarians who become werewolves don't dare interact with injured humans or animals, lest their appetites get the better of them.
 * Most Eldritch Abominations from The Laundry Series find humans - primarily their minds and souls - crunchy and good with ketchup. In fact, that's generally why the Earth is interesting to them in the first place. However, their insatiable hunger tends to make them less dangerous, as they tend to ignore anything past immediate feeding. And if a lesser predatory spirit is bound to a human, its host must periodically kill to feed it.
 * Much to his Mum and Dad's dismay, Horace ate himself one day...
 * An intriguing variation occurs in the Zenna Henderson short story "Food to All Flesh": a Catholic priest in a rural parish witnesses a landing spaceship which contains a single, utterly alien occupant which is quickly revealed to be both peaceful and extremely hungry. When the priest deduces that the alien is in the process of giving birth and desperately needs to feed its young, he endeavors to find something the creature can eat, but nothing is palatable.
 * The creature of The Relic must eat the human hypothalamus to survive.

Live-Action TV
"The Master: DINNERTIME!"
 * The Doctor Who episode "The Idiot's Lantern" features a mysterious energy being called the Wire insatiably consuming the electricity the human body generates. As a side effect, its victims lose their faces.
 * Also the Master in The End Of Time, only partially resurrected, forcing him to consume anything from greasy food to people in order to keep himself going.

"Ood: We must feed..."
 * This is.
 * Subverted in the beginning of The Impossible Planet,


 * Sylar from Heroes has The Hunger as an unfortunate side effect of his power (or his crazy, it isn't clear), causing him to kill people in order to take their abilities.
 * This so-called Hunger appears to have been a temporary plot device. Sylar has since shown himself to be capable of spending time with other people with abilities, such as Luke and Micah, without killing them.
 * This is typical addict behavior though considering the timelines. Back when the Hunger was a big thing, Sylar was trying to quit. For an addict, quitting time is craving time. When he met Luke and Micah though, he was feeding his addiction with other supers, and was metaphorically full, and thus not metaphorically hungry.
 * The Smallville episode "Craving" had a meteor freak overweight girl who tried smoothies made from kryptonite fertilized home grown vegetables. It made her slim down all right... and crave calories, especially fat. She sucked all the fat out of a roadkill deer and tried to do the same to a classmate. For some reason whenever she did this her mouth stretches a couple of feet down (is this Body Horror ?). She realized what was happening to her and spectacularly destroyed her greenhouse. They said she was taken to "a hospital", where God only knows how they will find a way to contain and cure her.
 * The local cosmetic surgeon might just have a new way to dispose of certain medical waste.
 * Two episodes before that, we had a guy who received heat draining powers, with a strong craving for body heat. A much less sympathetic blend of this trope and a Walking Wasteland.
 * In Season 6, Phantom Zone escapee Aldar was a Cannibal who devoured people's bones. He doesn't seem capable of stopping and goes through numerous victims every day.
 * The X Files went through just about every horror hunger in the book, as well as some not in the book. The Monster of the Week might be out to consume a victim's flesh, blood, bones, melanin, brains, liver, cancerous tissue, fat or anything else you might think of that can possibly exist within the human body.
 * In the Torchwood 5-part series Children of Earth, an alien species demand that they be given human children.
 * The big bads of Stargate: Atlantis, an alien race called the Wraith, feed on human life force and have subjugated an entire galaxy of human colonies to use as their own livestock. Curiously, the one time the heroes find a child Wraith, they discover she was capable of eating normally until she hit puberty. In the Alternate Reality episode "Vegas", the early effects of starving them can be seen on the captured Wraith leader Todd, who's become delirious and philosophical as a result.
 * Parodied in Its Always Sunny in Philadelphia when they confuse having a.
 * Several in Supernatural:
 * The Wendigo and Rugaru are former humans who transformed into man-eating creatures (although for different reasons.
 * The Crocotta, Wraiths, Rhakshasa and probably others are monsters who eat humans or part of them (like their soul).
 * in season 4 becomes addicted to
 * The implication in the last two episodes of season 4 that Lilith eats babies is suggested in season seven . Whether this is necessary or just overkill isn't specified.
 * The implication in the last two episodes of season 4 that Lilith eats babies is suggested in season seven . Whether this is necessary or just overkill isn't specified.

Music

 * Tech N 9 ne just wants to be a normal boy...
 * The cover of Cage's Depart From Me

Newspaper Comics

 * In Candorville,

Tabletop Games

 * In Vampire: The Masquerade (and the GURPS adaptation thereof), vampires with low levels of blood were at risk of going into Frenzy and uncontrollably trying to drain the blood of any creature available.
 * Furthermore, some books mention the risk of developing the "Elder's Thirst," under which no blood will sustain an elder vampire -- well, save for that of younger vampires...
 * Played with in Vampire: The Requiem. As vampires get older, their Blood Potency (or BP) goes up, thickening their blood and (among other things) limiting their feeding options. At BP 3, animal blood stops sating their thirst, and the vampire has to start hunting humans. Then, at BP 7, human blood loses its effectiveness. The vampire then has a choice: he can start hunting other vampires (which comes with both the obvious safety risk and Vinculum), join the Ordo Dracul to learn a Coil that lets them hunt whoever they want, or go into Torpor to try and drive their BP back down to more manageable levels.
 * Close. A BP 7 vampire has no risk of Vinculum when using it for sustenance, and considering just how powerful a BP 7 vampire IS (It takes 50 years for BP to naturally increase, and 300 years is a long time to build up a power base), they could use anything from the potential dozen childer the vampire has sired, to a blood tithe from fellow Kindred. A natural BP 7 vampire should have none of the Horror Hunger. One who became BP 7 through consuming the souls of their Elders, however...
 * In the New World of Darkness sourcebook Antagonists there is a supernatural disease called "The Hunger." Over a period of weeks it transforms the carrier into an inhuman monster with an uncontrollable desire for human flesh.
 * Cannibalistic urges can also appear in Changeling: The Lost, most often among those of the Ogre and Beast seemings.
 * Sentient Pandorans in Promethean: The Created have a bottomless hunger for Promethean flesh. This is generally just played as part of their antagonist status, but in the last book, Saturnine Night, a Sublimatus (sentient Pandoran) is introduced who manages to snap into lucidity on occasion, and outright weeps at how the Prometheans he feeds on have the chance to redeem themselves and become human... and he never will. He's damned to be hungry for the rest of time.
 * Dungeons and Dragons example: mind flayers. Minimum survival diet: one human, elf, drow, or svirfneblin brain per month. Optimal diet: one human, elf, drow, or svirfneblin brain per week.
 * Ghouls in Shadowrun (humans suffering from a magical virus) must eat human flesh to survive.
 * Ghouls in Call of Cthulhu have the same problem.
 * Any flesh will do, and they prefer it pre-rotten. Human cemetaries just happen to be easy pickings, but they prefer giant Gugs from the Dreamlands' Underworld, if they can get away with it.
 * Every other monster in Deadlands has a Horror Hunger, which even led to eventual lampshading: "Oh, and it has a taste for human flesh. But what doesn't these days?"
 * In the D&D Dark Sun setting, thri-kreen really love elves. They exude a pheromone which thri-kreen find hard to resist... especially if the elf is frightened or running! (In that setting, elves are fast, but thri-kreen are usually faster.) As a result, slavers know never to put a thri-kreen and elf in the same cage. Shame when a PC thri-kreen and elf have to work together. Not surprisingly, there was a kit called Thri-kreen Slayer.
 * The Fair Folk of Exalted can only stay within Creation when powered by virtue, in the sense that they can consume it, often permanently, to stave away Creation's attempt to define their fundamentally false and chaotic natures into stasis. They can get around this requirement by staying in areas soaking with the Wyld or with natural motes, by wearing pendants created by such places converted to their cause, or by only 'gently' feeding on the breadcrumbs of emotions spent in minor squabbles and keeping their power consumption down. The vast majority, however, just nom human minds away until their victims have less personality than the average Exalted robot.
 * Taken slightly more straight by the Erymanthoi, better known as blood apes, who are summoned by and for the explicit purpose of draining the last drop of blood from a mortal being. They don't have to literally drink blood after every fight, but they'll complain if they're stopped from doing so.
 * The Yozi Metagaos is chiefly motivated by an eternal hunger that can never be sated no matter how much he devours. We can perhaps consider the lack of official Metagaos charms released so far to be a good thing, since Infernals become more like their patrons as they learn their powers...
 * Dark Eldar in Warhammer 40000 are cursed to have their soul slowly drained by the Chaos God Slaanesh, and must replenish it by feeding on pain and suffering. Doing so rejuvenates them, so a Dark Eldar could theoretically live forever, provided they have access to a steady supply of victims. However, the hunger grows with age, so the oldest Dark Eldar Archons have thousands of slaves sacrificed for them every day, and even that isn't enough to rejuvenate them, but merely keep them alive. Presumably eventually they'll hit the point where they will metaphysically starve faster than they can feed.
 * This is less a curse and more a side-effect of living in their Crapsack City. Dark Eldar who leave Commorragh to go live with their less evil cousins no longer need pain to survive. This is extremely rare.

Videogames

 * The various lycanthropes, werewolf or otherwise, of The Elder Scrolls universe are magically cursed to hunt down man or mer monthly, if not nightly, or be at the edge of death when the transformation ends in the morning. Unusual for this trope, there's no actual eating involved in the game's canon; this particular form of Horror Hunger is due to the lycanthropy being a "gift" provided by the Daedra Hircine, whose sphere is the hunt.
 * Zombies in Resident Evil only have their muscles and mid-brain reactivated by T-virus. The Midbrain governs motor control and the need to breathe, pump blood, and eat. Being that they're also viral carriers, T itself might have something to do with why they're such personal space invaders.
 * True to its name, zombies from the Half Life mod They Hunger are stricken with an unsatiable hunger, moaning and scrawling (in blood, of course) "why do we hunger?".
 * In World of Warcraft, hunter pets have a Happiness status relating to hunger. You can make pets Happy by feeding them, if you don't feed them they get Unhappy, etc. This was played with in the web original fanfic/ parody Text Adventure Game You Awaken In Razor Hill, in which the protagonist hunter tames an Amphibious Shark, whose happiness status is described as A Pit Of Endless Ravening. The shark's hunger is so intense that his happiness goes down rapidly and constantly unless he is eating at all times, and even if his happiness is raised to 100% he is still described as A Pit Of Endless Ravening.
 * Death Knights experience the constant need to inflict agony on other creatures. This is described by the game as an endless hunger and, if not sated, death knights experience terrible pain that can drive them into a mindless, blood-seeking hysteria. Which is not reflected in game mechanics, unfortunately.
 * In Lusternia,
 * While the main character in Aquaria learns that, the translatable message in his chamber indicates
 * The Neverwinter Nights 2 add-on mask of the betrayer has you stuck with/as a gaping void creature that needs to feed on spirits to survive, unfortunately feeding increases your hunger..
 * In Digital Devil Saga, you are explicitly eating your enemies. Every one of them is a human who can shapeshift into a demon form, like you. Eating them is how you get stronger and there are many attacks specifically designed to allow this. Fortunately, most of the time, devouring is a stylized "the enemy is vaporized and sucked into your mouth" style attack. Trying to curb this never-ending hunger is one of the main goals for the protagonists of the game.
 * Darth Nihilus is this trope.
 * Wizard Needs Food Badly is the practice of imposing a time limit in video games based on the insatiable need to consume food and/or health items or else death is imminent.

Webcomics

 * The eponymous character of Charby the Vampirate can turn into a ravenous monster at the sight of blood. It cost him a girlfriend, and almost caused him to eat his only "normal" friend's grandmother.
 * Flipside villain Bloody Mary is cursed with Bloodlust by the sorcerer who created her, forcing her to sate her hunger with human flesh or suffer terrible agony. When she captures Maytag, she learns the important lesson that it's still possible to be friends with someone while you're.
 * Parodied in Two Kinds, Flora has stated (twice, and both times as a joke) that she wants to try eating human. There's also a joke on a bonus comic that if the group runs out of food, they can eat Keith.
 * In Homestuck Vriska's Lusus eats young trolls. And if she doesn't feed her regularly, it may eat her instead...
 * Then there's what happens to those eaten trolls' lusii: They're fed to Feferi's lusus, whose starvation could kill an increasing number of trolls, up to and including all of them in the whole galaxy.

Web Originals

 * Carmilla of the Whateley Universe. She needs to eat live things in order to live, and she sucks out the life force, turning her prey into blue dust. She doesn't usually eat humans, she usually settles for other mammals.
 * In the online browser game Echo Bazaar,  will find themselves experiencing this.

Western Animation

 * Back At the Barnyard - comic example: Freddy the ferret is obsessed with eating his best friend, Peck the rooster.
 * One of the episodes of Extreme Ghostbusters involved the team battling Ravana, a gluttonous ghost who feeds by infecting people with a virus that gives them an extreme metabolism and makes them eat constantly, which is converted into ectoplasmic energy which it absorbs.
 * Spoofed in an episode of South Park where Butters' parents think he's come back from the dead. They think he has this and needs to eat people, when really his friends just faked his death so he could infiltrate the girls' slumber parties and find out the secret their mysterious fortune-telling powers.

Real Life

 * The mental disease known as Pica causes people to uncontrollably eat things that are not conventionally considered edible. Dirt, sand, paper, wood, stones, rusty nails, hair... Depending on the severity of the disorder and developmental level of the afflicted individual, they may be completely aware that their behaviour is insane but unable to stop themselves, sometimes to the point of requiring physical restraints. An even more severe form of Pica is Autophagia, which is all of the above except with the compulsion to bite off and consume chunks of your own flesh.
 * Anything that needs food, really. People on the extreme edge of starvation have been known to eat almost anything from trash to feces, including cutting of pieces of their own limbs to devour them.
 * Serial Killer Richard Chase was delusional enough to believe that if he didn't eat people's organs and drink their blood, he would die.
 * To some vegetarians and vegans, omnivores who say they could not live without meat come across as this.
 * Given the nature of human diet, it might be true in the majority of cases.
 * An actual real life version of this trope occurs for those who suffer from the genetic disorder, Prader-Willi syndrome, where the defining behavioral symptom after the first year of life is a insatiable and endless hunger that can never be satisfied no matter how much the person eats due to a defect in their genes that disables the areas in the brain responsible for feelings of fullness. Left unsupervised, people with Prader-Willi syndrome may eat until their stomachs tear.
 * Wendigo psychosis is a culture-bound syndrome that manifests as an intense craving for human flesh and constant fear that the sufferer will turn into a cannibal.