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I Know Your True Name
"The name is the thing, and the true name is the true thing. To speak the name is to control the thing."
Ursula K. Le Guin, The Rule of Names

This is a version of Functional Magic that revolves around the use of "true names." A true name perfectly describes something's essential nature; knowing a true name gives one power over the owner of the name. In some portrayals, using a person's true name forces them to obey your commands. In others, a true name gives you a connection to the name's owner that allows you to work magic on them from a distance. Sometimes, a person's true name is needed if you want to work any magic on them at all.

In some stories, all creatures have true names, whereas others limit the use of true names to certain kinds of creatures, such as fairies, demons, or dragons. As a rule, objects do not have true names.

A person's true name might be self-determined, or bestowed on them by someone else—possibly in a religious or magical ritual. In works which feature true names prominently, people tend to guard them jealously, and will even have a second name (or two or three or more, depending on the character's age) for everyday use.

Audiences might think that having a very long or difficult-to-pronounce true name might provide one with a shield against being enspelled, but it never occurs to characters. Demons are an exception, with names that are frequently impossible for humans to pronounce.

However ingenious this tactic is to employ, it's never always guaranteed to work and can backfire spectacularly. A person's nature may be more complex and hard-to-understand than initially taken for. They may compartmentalize or change their beliefs sporadically, thus invoking even their "True Name" is going to have very limited influence over them. Mental illnesses are also a factor to consider and be wary of. The person in question may also be so corrupt, so insane, that their True Name has no meaning or significance to them anymore. On the other hand, announcing their real name may even damage them further, rendering them useless for controlling.

Contrast Speak of the Devil, where saying a name summons the named entity, but doesn't confer any power or control over it — in fact, speaking said name may actually give that entity power over YOU!

Compare Sympathetic Magic, where you need some other part of a person to work magic on them. Compare its related trope (and former title) Words Can Break My Bones, as well as Language of Magic. See Do Not Call Me Paul for the mundane, magicless version.


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     Anime and Manga 
  • Inverted in A Certain Magical Index. When sorcerers and magicians reveal their magic names, they gain an unspecified boost to their magical ability. One character who's a Saint refuses to do so until faced with the Godzilla Threshold of the Angel Gabriel wrecking havoc on earth, just because she's so scared of her own power.
  • In Ayakashi Ayashi, the protagonist can reveal the true name of anything he comes in contact with and use its power. The 'name' usually manifests as a tool of some sort, and is the most effective way to fight the monsters the heroes are meant to hunt down. Alternatively, destroying a Youi's name, will destroy the Youi itself.
  • Bleach: All races have powers that require knowing the true name of the attack to make it function at maximum potential, but true names are especially important for the Shinigami's Zanpakutou, which cannot be unsealed without knowing the sword's true name. The sword also has a second name which is required for unlocking a second release of power. Dismissing the value and identity of a Zanpakutou is considered the height of ignorance, as both Ichigo and Zaraki learn. Also, one Shinigami (Yumichika) lies about his Zanpakutou's true name to ensure his Zanpakutou refuses to reveal its true power so that he can fit in with his division's fighting philosophy. It is later revealed that the character Ichibei Hyosube gives everything in Soul Society its true name, including the Zanpakutou. Anything Ichibei touches with his giant brush gets its name cut in half, which also cuts its power in half. Anything Ichibei splashes with his ink gets its name erased, to the point that Yhwach can't remember his own name and the name of his sword when it happens to him, and its power is erased. Ichibei's bankai gives him control of all blackness in the world and allows him to erase the true name of anything covered in the blackness and give it a new one.
  • The eponymous Death Note requires that you write the true name of your intended victim, hence some of the characters using aliases whenever possible. The user is also required to know the face of the target.
    • The definition of 'true name' beyond 'the name a shinigami's eyes see floating over your head' is not provided, but in the majority of cases it appears to be the legal name provided at birth. Meaning L apparently had fucking loonies for parents, unless he was named in unusual circumstances.
    • Alternatively, one's 'true name' is simply the name people call themselves in their heads. For nearly everybody this is the legal name provided at birth; L may just have spent so much time self-identifying as L that this is actually how he thinks of himself.
    • Light does not appear to have lost too many marks to name changes, probably because he concentrated his efforts on persons already investigated thoroughly by the police, and Japan has a pretty tough name-record system in place with the family register. Modern record-keeping generally makes complete identity change much harder. A Death Note user in Japan a couple hundred years earlier would have had an interesting time working out which of a man's names was 'true.'
    • Very minor, but the reason why a face must be known with the name was because the Death Note itself recognized that several people might have identical names, down to surnames, so you had to know the face of who you're writing down or else everyone with that name would all instantly drop dead. L managed to outsmart Light early with this by using the name "Hideki Ryuga", knowing that there's a famous Pop Idol with the same name and if he should happen to drop dead, it would mean Light is the culprit (L wasn't aware of the rules, but Light knew that even if Hideki Ryuga was his real name, the image of the pop idol might accidentally flash in his brain anyways, so Light couldn't even "test" it).
  • The Devil May Cry 3 manga says that a demon's name is so important to him that by taking it away, the creature can be sealed for eternity.
  • In Fruits Basket, Hanajima's brother Megumi claims to be able to curse people if he knows their names. Hanajima had warned the Yuki Sohma Fanclub representatives not to say their names in the house, but later Megumi reveals they did just that.
  • Played for Laughs in Houshin Engi during a battle where the enemy's Paopei was a megaphone that could freeze a person in place by shouting them to do so, as long as the user knew his target's real name. Taikoubou has fun with this.
  • In Isuca the main character has the ability to reveal the true name of any magician and demon or otherwise supernatural being through… mouth contact. Yes, it's that kind of manga.
  • True names play a big part in Loveless as they determine who your partner will be.
    • When Soubi fights with Ritsuka he goes against his name since he and Ritsuka don't share names, which not only weakens their power as a whole but causes his name to bleed.
  • Nodoka Miyazaki in Mahou Sensei Negima! requires at least a name for her mind-reading book to take effect. Recently, with the help of a dungeon-crawling adventuring party, she's gained two Next Tier Power-Up accessories (both supposedly useless, but Game Breaking in her hands): the auris lectans, an ear-piece which immediately reads out words on paper to her mind, and the comptina daemonia, which can read a target's name (in a sense) to her. While less powerful and discreet than the shinigami eyes, it's much cheaper.
    • Also, at least one opponent, at the sight of the book, wondered if it was the Death Note.
    • Interestingly, it has been revealed that one's True Name is the name that they think is their True Name. Also, if you name, say, any of a person's multiple personalities and so on, it would still work. It gets kinda complicated regarding the specifics on true names and souls and all that.
  • In Mononoke the name ("katachi" in the original Japanese, which also means 'form') of the mononoke is one of the three things the Medicine Seller needs to kill it.
  • A central part of Natsume's Book of Friends. The main character owns a book filled with true names of spirits and is constantly accosted by spirits who want their names back or spirits who want to steal his book for themselves. Exorcist have to make contracts with youkai by giving them a temporary name for their partnership. It turns out it is illegal to use the real name of ayakashi because their fate is tied to the contract medium, making the Book of Friends illegal as well .
  • Spirited Away has characters whose independence depends on them not forgetting their actual names. Chihiro is reminded not to forget hers (although the witch tries to take it away from her), and Haku is enslaved until he rediscovers his name late in the film.
    • Worth noting is the fact that only one other character introduces himself without being prompted or hearing the name from someone else.
  • In the Vampire Princess Miyu OAV, the Dark Magical Girl must first learn the name of the Shinma she's chasing after and then use her flames in a spell that writes the kanji of said enemy's name in the air. Only then, she can seal the enemy away.
  • In Wild Rose, Mikhail knowing Kiri's true name, Kazekiri, is both proof he is his master and gives him total control over Kiri.
  • This idea is enforced, expounded, and several other adjectives starting with 'e' by xxxHOLiC, particularly by one of the main characters, Ichihara Yuuko. No, that's not her real name, and she moves on before she ever reveals the real one. The series also deals a fair bit in Words Can Break My Bones. Incidentally, the main protagonist's name, Watanuki, is also a false name, although he himself is not aware of it until far into the story.
    • Tsubasa Reservoir Chronicle, due to it being linked to xxxHOLiC although it isn't stated here as explicitly. Almost no main character actually uses their real name. One set of "Syaoran" and "Sakura" are actually both named Tsubasa, Fai's real name is Yuui, Kurogane's real name is Youou (or Haganemaru in the anime), and Mokona's real name is Soel.
    • Cardcaptor Sakura once featured this when the only way she could seal the power of one of the Clow cards was to discover its name, given only the clues that it seemed to appear as a duplicate of Sakura, and that it held a relation to the Shadow, Water and Illusion cards. "Like a shadow that mimics your moves. Like water that reflects your image. Not real, but an illusion.": the Mirror card
  • Oddly inverted in Baccano!. Immortals are physically incapable of not revealing their true when another one is in the general area, but that's the only restriction their name puts upon them.
  • The pharaoh in Yu-Gi-Oh! was unable to reclaim his world of memories from Zorc Necrophades until Yugi and the others learned his true name, Atem.
  • In YuYu Hakusho, Roto is able to escape almost certain death by saying "I own your mother's life... Shuichi Minamino", and revealing that he has a demon able to kill Shiori Minamino if he so commands.
  • In Monster, the seemingly unstoppable Johan stops in his tracks when he finds out he can learn his birth name ("Johan" being a false name he adopted from a storybook he read when younger), long enough for his plans to incite everyone in a small town to kill each other to come crashing down and to get himself shot in the head.
  • In Magical Girl Lyrical Nanoha ViVid, this is one of the prerequisites of Fabia's Curse for shrinking and bottling a target. When she fails to capture a target, she assumes that she got her true name wrong.

     Comic Books  
  • Variant: In The Invisibles, all new Invisibles take on a 'magic name' upon joining the organisation. This name is tied to their personality, and strongly influences their powers and lives (as poor Tom O'Bedlam discovered the hard way).
    • Relatedly, in the same series, the English language has far more then 26 letters. Being knocked out is just the least of the possibilities with the new words.
  • Superman often encounters Mister Mxyzptlk, an imp from the 5th dimension who is sent back when he says his name backwards. As he's invulnerable otherwise, the only way to get him out of your hair is to trick him into saying his name backwards. Ever since the John Byrne Continuity Reboot though this is nothing more than Mxyzptlk being sporting, as being truly untouchable by the 3rd dimension natives would be boring.
    • Grant Morrison revealed in a storyline of JLA that Johnny Thunder's Thunderbolt is actually a being from the same dimension Mr. Mxyzptlk hails from, and Johnny's old magical phrase ("Cei-U" or "Say You") used to call his Thunderbolt is in fact the being's name (Yz) pronounced backwards.
      • In the same storyline, a group of fifth dimensional imps reins in another by intimidating him into saying his name backwards.
    • In the "Emperor Joker" storyline, the Joker tricks Mxyzptlk into revealing his "secret imp name", allowing the Joker to steal 99.9% of Mxy's power.
    • In Action Comics #273 (February 1961), Superman decides to pay Mxyzptlk back for his pranks by visiting HIS home dimension and playing pranks on him. Mxy then tries to trick Superman into saying his name backwards (Namrepus) to send him back to Earth; when he finally succeeds, nothing happens, because unbeknownst to Mxy it isn't Big Blue's real name. After Supes has had his fun, he returns home by saying "Le-lak" ("Kal-el" backwards).
    • In an episode of Super Friends, they record Mxyzptlk saying his name and then play the recording backwards, which banishes him. For some reason.
    • If Silver Banshee knows a person's real name, then her scream will instantly kill them if they hear it. Because she doesn't know Superman's real name is Kal-El, her scream can only hurt his ears, much to her frustration.
    • In one comic Superman tries this and it doesn't work because Mxy had his name legally changed.
  • The justification for Libra being able to kick the Spectre's ass in Final Crisis was that the Spectre didn't know Libra's True Name. Up to this point the Spectre was portrayed as an unstoppable embodiment of the Wrath of God (or the Presence, the closest thing to God in the DCU). Considering the shitty job Crispus Allen had been doing since becoming the Spectre, it's actually not all that surprising. Especially since Libra was working with... you know... Darkseid.
    • Final Crisis: Revelations instead implied the reason to be that Spectre only delivers justice to those God wants justice delivered to via him - he is the hammer of God. He smites what God wants him to smite. Libra's fate (and that of Darkseid) had apparently already been decided, and it didn't involve Spectre. As a result, Spectre wasn't allowed to interfere with that particular issue. Either that, or since Evil won the war between the New Gods, Darkseid was dragging the entire multiverse into the Forever Pit and receiving massive amounts of Villain Anti-Decay, at this point he had more power over the multiverse than God. Neither the Spectre nor the Radiant could feel God's presence at the time, despite being aspects of Him.
  • In ElfQuest, the telepathic Wolfrider elves all possess "soul names", the knowledge of which gives another elf access to the owner's most intimate thoughts and feelings. Therefore all Wolfriders guard their soul names carefully from all except their closest friends and lovers. However, the involuntary mating urge called Recognition sabotages this by forcing the affected couple to exchange soul names. On one occasion Big Bad Winnowill learned Dewshine's soul name and attempted to use the knowledge to coerce her, which only went to show how evil Winnowill was. On another occasion, Nightfall unilaterally gave her lovemate Redlance her soul name before placing herself in danger, so that if she died her soul would still be joined to his. She later brought Redlance back from the verge of catatonic shock by persuading him to give her his soul name, causing their souls to become one.
  • This was a favourite trick of Con Man/Occultist Igor Bromhead in the Hellboy comics. Most memorably used in the "Box Full of Evil" storyline to enslave H.B.'s demon-cousin Ualac, and then to paralyze Hellboy himself so they could steal his mystical Crown of the Apocalypse and Right Hand of Doom. It backfired, though, since Hellboy's "True Name", Anung Un Rama, means "World Destroyer, The Great Beast"—a role Ualac had just usurped from Hellboy by stealing his crown. When Hellboy realized this, Bromhead's hold over him was broken. Most recently, he used the true name of the human component in Hecate's replacement body to imprison her.
    • Specifically in Box Full of Evil, this is done thrice: first with Igor Bromhead commanding the demon Ualac using its true name, secondly with Bromhead commanding Hellboy himself with his true name, Anung Un Rama, and finally with Hellboy commanding Ualac using his own name (Anung Un Rama, again) which had transferred to Ualac when the demon stole Hellboy's crown of fire.
  • It is mentioned in multiple issues of The Books of Magic that names have power, particularly in the Otherworld of Fairyland. When the Manticore asks Timothy Hunter his name, the one he gives is "Jack Bone". In the original four-issue run, Rose makes the Baba Yaga back down by claiming she knows her true name, and threatening to shout it to the world. She's not bluffing.
    • Tim also takes control of a clay golem by giving it a name, and drawing a face on it. His current companion, Leah, comments that such a thing is considered impossible.
  • The Zombie Priest, Big Bad of The Goon, can be controlled by anyone who knows his true name. One issue heavily implies that he's Rumpelstiltskin.
  • The Elder god turned Demon Cthon, prior to leaving the physical plane, penned the Darkhold, the first book of magic ever written. He did it because "to name something is to hold power over it". As a result, Cthon effectively rules over all the magic of the Marvel Universe.
  • Reversed in the case of The Unnameable, a demonic entity from Marvel Comics' The Defenders series. Anybody who found out its true name fell under its control!
  • The recurring Eldritch Abomination of Hellblazer during Mike Carey's run was one of the animals that Adam never got around to naming during his time in Eden. And, as he never named it, he never gave it purpose, meaning, or definition — leaving it to become shapeless, formless, and ever hungering...
    • The incident in Newcastle that haunted Constantine for his entire adult life went wrong because the demon he and his friends tried to summon and control wasn't named what they thought it was. Years later, Constantine learns its true name it's Nergal, who by now has made a few appearances without an overt connection to this part of backstory when the demon lets it slip during a monologue.
  • Hawk & Dove #15 (1990) features a subversion of this. The protagonists find themselves stranded in Druspa Tau, a place of magic, different from their superheroic place of origin. There is a magical liquid metal called "tridic metal". It can be made to form any object the wielder can imagine but only if the wielder knows that object's True Name. One master does amazing things with the True Names of "staff" and "sword" and "morningstar" etc. Hawk? Figures out that if you know every last detail of an object, you don't need the True Name. So he picks up a blob of tridic metal and goes "Trigger. Muzzle. Safety catch ..."
  • In Proposition Player, Bill the Angel of the Lord claims that a whole slew of terrifying first-testament things will happen if his True Name was uttered, so he sticks with a simple nickname. It's never made explicit whether it's true or he's just bragging, though either is equally plausible.
  • Doctor Doom pulls this off in Mark Waid's Fantastic Four arc "Unthinkable". In an earlier arc, Doom put aside his feud with Reed Richards to assist Sue in the birth of her daughter. In return, he claimed the right to name the child, whom he called Valeria, and placed her under his royal protection (he also implied that he enjoyed the idea that Reed owed his daughter's life to Doom). During "Unthinkable", he used that name connection to channel dark magic through Valeria to attack the Fantastic Four. Many fans disapproved of this story as it ran counter with the classic "Doom's Word is his Bond" attitude, and subsequent writers seem to have pretty much ignored this incident, having Valeria genuinely love her "Uncle Doom", and Doom genuinely return her affection.

     Fairy Tales 
  • In "Rumpelstiltskin", the title character offers to let the princess keep her firstborn child if she can guess his name within three days.

     Fan Fic  
  • In Barack Obama and the Thunder Zepplin, Obama conjures the sylph Plame using her real name and offers her a new name in exchange for transport. This is a reference to Valerie Plame, who had to leave the CIA after her name was leaked to the public.
  • In .hack//G.U. The Staircase to Nowhere, if an Epitaph user learns the true name of another Epitaph User, he/she can control their fellow user and make them do anything.
  • In the Eyrie Productions Unlimited story Raven/The Demon Halloween Special, after an "eventful" Halloween date between Raven and Etrigan (the aforementioned demon), realizing that he may be forced against his will again to do the will of the underworld, tells Raven his true name - giving her the power to stop him completely. (While this is certainly an effort to prevent him from being forced to commit any actions to which he personally objects, it is also an attempt to atone for his involvement - against his will - in just such an act when he kidnapped her on behalf of her father Trigon earlier.)
  • Used several times in The Dresden Files fanfiction Fair Vote. Exploited spectacularly so near the end.
  • In a German Tabletop Games fan comic, the gay priest of a group converts a demon in order to free said demon from the evil mage who caught the group. Reason? With the conversion, he got a new name, and as you know, the control over a demon depends on knowing his true name.
  • Very important in the My Little Pony: Friendship Is Magic fanfiction Eternal, in which knowing and speaking someone's true name is essential to breaking past the masks certain characters have built around themselves. In dreams they are even more powerful and essential, but conversely misnaming somepony, especially oneself, while in a dream is a recipe for disaster.
  • One of Sakura's most critical power-ups in the Naruto fanfic Time Braid was discovering her own True Name. After all, if knowing someone's True Name gives you power over them, it only makes sense that knowing your own gives you power over yourself.
    • Also happens in Vulpine. It turns out to be the true secret behind the Hiraishin. Minato back-asswarded his way into figuring out his own True Name via sealwork and then signed it on a summoning contract with himself, thus explaining why the Hiraishin never worked well for anyone else — no one else has exactly the same True Name as he does.
  • One Avengers fanfic has Stark fall through the portal to the Norse underworld. A bridge to Asgard is guarded by Hel, who demands his name before she can lets him cross. After he gives it, Tony has an oh crap moment as he recalls this trope, because "The brain reacts instinctively to the name it considers its own."
  • In Pokémon: The Great Adventure, every wild Pokémon has a True Name that is given at its birth. Though it isn't really magical, only other Pokémon can know a Pokémon's True Name and having a human learn it without it being given is something they dread. On the other side, when a caught Pokémon willingly gives his True Name to his Trainer, it is considered the ultimate mark of trust. Ash knows the True Name of every Pokémon in his team, bar those he caught in the Orange Islands.
  • At least one deity in Destiny Is A Hazy Thing forcibly got rid of it's true name in order to keep others from having power over it. However, this also made said deity considerably weaker since prayers require a name to be truly effective.

  • In The A-Team, the CIA contact is known as Lynch, which it soon becomes obvious is a pseudonym, as various military figures recalls all the CIA agents named Lynch that they've known. At the end, Lynch is calm as he's about to be led away and arrested, until Sosa reveals she has a warrant that's for Lynch's real name. At that point Lynch goes straight into Oh, Crap mode.
  • Warlock, the MacGuffin is a book that contains the true name of God. Saying his true name backwards will cause The End of the World as We Know It.
  • At the climax of Teenage Mutant Ninja Turtles, when Splinter confronts the Shredder;
    Splinter: Yes, Oroku Saki, I know who you are. We met many years the home of my master! Hamato Yoshi!
  • In Justice League: War, Batman is able to stop Superman from attacking him and Green Lantern by whispering, "You bruise, but you don't kill. Do you... Clark?"

  • In Delia Sherman's "Grand Central Park," the main character plays truth or dare with the Queen of Central Park (a fairy). She asks the Queen to tell her her true name.
  • In Poul Anderson's Operation Chaos, the narrator does not give his real name as a POW, only the official name he's using; when his daughter is born, affairs are more organized, and she is issued both a name she can use and a secret, real name.
  • In Elizabeth Bear's Promethean Age series, names have power, as is demonstrated in the Wham Chapter of Blood & Iron; Elaine gives her true name — and her soul — away, thus rendering herself immortal and therefore capable as taking over as the Queen of the Faeries. She occasionally still answers to the name, though; magic is magic, but you still need a way of getting someone's attention across a crowded room.
  • In Tithe, by Holly Black, Kay forces one of The Fair Folk to tell her his true name, not quite realizing that when she uses the name he has to do anything he's commanded to do.
    • Specifically, Roiben promises to tell her any three things she asks. After he plays literal genie with her out of habit/to protect her ("Shall I consider that your second question?") she asks for his name to piss him off. She only knows that fairies don't like to share their names, and finds out WHY when she uses a poorly worded insult.
  • This trope is referenced in A Connecticut Yankee In King Arthurs Court - the protagonist/narrator once fools the people into thinking he has done magic, by claiming to command an evil spirit by "thine own dread name" and then just making up a long nonsensical word.
  • In Jim Butcher's The Dresden Files, all sentient beings have a true name - in this case, it's their actual name, pronounced exactly as they say it. The more parts of their name you know, the more power you can hold over them. If you know their full name and can pronounce it correctly, you have a direct magical and metaphysical link to them. A doorway to their being, if you will. Of course, a doorway goes both ways. That's why Harry's Badass Boast mentions his name in full, and then adds the addendum that you should "conjure by it at your own risk."
    • Harry meets a Dragon named Ferrovax at a costume ball, and doesn't tell him his full name (going by just "Harry Dresden"). The incredibly powerful Ferrovax is able to force him to his knees with only the two names.
    • Also, as the first book demonstrates, there is something more stupid than revealing your true name to your enemy: Letting him hear the true name of the demon you just summoned to kill him.
    • Harry gives people nicknames. "Lash" ( Lasciel, the Temptress), "Ivy" ( the Archive), "Shagnasty" (the shapeshifter who feeds on fear), among many others. He even named the Black Council, and it probably isn't related in any way, but the only meaningful evidence to their existence started showing up after he nicknamed them.
    • Harry's habit of giving nicknames proves unexpectedly powerful as the names he gives them influence the very nature of beings like a skullbound spirit of intellect, the embodiment of all recorded knowledge, and the psychic imprint of a fallen angel. This somewhat backfires when he casually calls the archangel Uriel "Uri," and is told in emphatic terms to never do it again - that "el" is the part of Uriel's name that refers to God (the name as a whole means "Light of God" or "God is my Light") and he doesn't appreciate having it left off. There's also some Fridge Horror there: Harry has influenced things in part by giving them names, and it would be very bad if an angel as Badass as Uriel were to forget the "of God" part for even a minute.
      • Especially considering that other angel whose name prominently features something meaning "light."
    • Keeping one's names in reserve doesn't help when dealing with angels. Thanks to their intellectus, they automatically know the True Name of anyone they're dealing with, letting them flatten any mortal who tries to stop them from completing their tasks.
  • Ted Chiang's SF short story Seventy-Two Letters uses this trope as one of its themes. In the story scholars engage in research to discover new names to give to clay golems that will imbue them with the ability to perform various tasks.
  • In Meredith Ann Pierce's The Firebringer Trilogy, knowing someone's true name doesn't necessarily give you complete power over them - it just makes them a lot more vulnerable to other spells.
  • In Glen Cook's Black Company series, saying "I name your name, ______" with the person's True Name will strip them of their supernatural powers. Guessing wrong about which ancient wizard you're naming can be hazardous to your health...
    • This is also why the most powerful sorcerers in the setting are universally Evil Sorcerers. Any magic-user not willing to suppress his true name by any means necessary will not remain a magic-user for long.
    • The only good wizard of sufficient power in the series is able to do so because, as the result of some peculiarities at the time of his birth, he has no true name, only a nickname.
  • The Wiz Biz/Wizardry series by Rick Cook; this also semi-averts people not realizing the best protection, as the hero is from another world and after a near-brush with revealing his true name, only goes by two different convenient nicknames. Other wizards also go by a nickname, or only a portion of their name, for the same reason.
    • This comes in particularly handy when a bad guy sics an ultra-powerful demon onto the hero; said demon is dangerous because it can hunt and kill anyone whose name has ever been spoken in that world. This would be a perfect plan except for the "from another world" thing.
  • Diane Duane's Young Wizards series has the wizardly Speech as the Language of Magic. Knowing someone's true name does not let you control them, but it is needed to perform some types of spells on them. Wizards must "sign" spells with their name in the Speech, which comprise not only spoken names but personality and sense of identity. And writing the name of something differently in the Speech changes the thing so named, so they must be treated with extra care.
    • Nita exploits this in the climax of So You Want to be a Wizard when she's reading from The Book Of Night With Moon: she rewrites the last character of The Lone Power's name so instead of being trapped as evil forever, he has the option to turn back.
    • Another example occurs in A Wizard Abroad where to repay a debt, one of the Sidhe whispers what is presumably his true name to Nita, instructing her to speak it to call for aid one time if she needs it. It comes in handy when they encounter creatures that are immune to their spells and speaking it calls out said fey and The Cavalry (literally).
    • All of the words in the Language of Magic are the true names of the things they stand for. Which makes sense, since it was the language with which reality itself was written.
  • The Door series, also by Diane Duane, also uses the trope. People have powerful, secret true names, though most don't know what theirs is.
  • At one point in the Malloreon, Ce'Nedra was possessed by Zandramas. Polgara forces Zandramas to admit her name, and by doing so is able to banish her. Polgara mocks Zandramas for "not knowing the power of a name."
    • It eventually becomes apparent that Polgara was lying about this. Zandramas is better at messing with minds than Polgara is at spotting her, but is aware of her inferior education and (relatively) enormous inexperience, and is inclined to run in any direct confrontation. Polgara's bluff played to this.
    • Eddings also played a different version of this game in the Tamuli, in which the Child Goddess Aphrael speaks the true name of the Elene God to Patriarch Bergsten, to prove that she's not a demon.
  • In Michael Ende's The Neverending Story, the Fantastica side of the plot begins with the Childlike Empress getting sick because she "needs a new name." Bastian becomes a Fantastican hero because he has the ability to name things. This is natural, as words have obvious importance when the entire world exists in a story.
    • In the second film based on the book, Bastian is called back to Fantasia in order to name the new threat ("The Emptiness") which should give them the power to fight it properly.
  • Diana Wynne Jones:
    • According to The Tough Guide to Fantasyland, avoiding this is the real reason so many Fantasylanders have apostrophes in their names.
    • In The Dalemark Quartet books, saying the lesser name of one of the gods causes an island to come up out of the sea and break your enemy's ship in half. "What happens if you say his big name?" It causes a tsunami... even if you're miles from the sea. Unsurprisingly, he's known by his nickname, the Earth Shaker. His wife's names also have dramatic effects.
    • In Power of Three, a major threat to the Dorig and Lymen is to simply mention that one has the name of an enemy in mind, as having a person's name allows you to curse them. Ceri scoffs at the 'giants' for giving out their names so freely.
  • Katharine Kerr's Deverry sequence, where it applies to dragons.
  • Ursula K. Le Guin's Earthsea series is probably the Trope Codifier. Each person is given his or her true name (which is a word in the language of dragons) by a Wizard. People keep their true names secret, and have other names for common use. A woman who lost her true name was rendered semi-catatonic. It is implied by the books that one can't be given an unpronounceable true name.
    • In one of her short story precursors to the series, "The Rule of Names", two supposed wizards get into a battle that involves lots of shapeshifting. The wizard Blackbeard invokes this when his opponent turns into a dragon, naming him and forcing him into his true form. Turns out the opponent's true form is the dragon. Blackbeard is promptly eaten.
    • And it's not just people that have names; everything, from rocks to trees to sheep to the earth(sea) itself has a name, and can be controlled by one who knows it, thus allowing Reality Warping. Unfortunately, said control affects EVERYTHING that shares the name, as shown by the story of the man who accidentally turned an ocean of saltwater to fresh, when he only wanted a section of it to change. He was cursed by the gods to endlessly shovel the deposited salt back into the ocean, without being able to die.
    • And different parts of things have names. The whole ocean is a name. The western ocean has a name. This bay has a name. This shoreline has a name. Being a powerful wizard means being a walking dictionary of true names. Being a research wizard means using many tricks to learn true names.
  • A Wind in the Door by Madeleine L'Engle does not treat names themselves as being important, but the very state of being Named and of having someone know your Name is extremely important (as the cherubim Proginoskes put it, "He calls them all by name, and someone has to know who He's talking about.") This is the job of Namers, because without being Named, a person cannot know who they are, and are vulnerable to someone else pushing them around. The secret to naming? Love.
    • Reversed by the Echthroi, the closest thing L'Engle had to monsters: they can "X" a person, un-Naming them. Echthroi can be "rescued" from their state by Naming them.
  • In The Lies of Locke Lamora by Scott Lynch, mages can mentally puppeteer anyone whose true name they know. The Bondsmage finds out the hard way that Locke Lamora is not the protagonist's real name.
  • Patricia A. McKillip:
  • In Robin Mc Kinley's Sunshine, vampires use name magic. One laughs at the narrator for asking him his name, and later reveals it as a gesture of trust. Unlike most works, in Sunshine, the name is the name — or names — you use. The narrator is as vulnerable through her nickname "Sunshine" as through her name "Rae," and more vulnerable through either of those than through her long-disused birth name "Raven Blaise."
  • Warhammer 40,000 has many examples, so naturally so does its literature segment:
    • The Horus Heresy novel False Gods has Temba whisper Horus's name to his warp-tainted sword, before fighting with new skill.
    • In the later novel Prospero Burns, a demon is able to control all the Space Wolves present by pulling their names from Kaspar Hawser's brain. Only one marine, called Bear, is immune to the control. When Hawser later asks why the demon couldn't control Bear, he learns that the demon pulled the names from his mind, and Hawser's gotten Bear's name wrong from day one. Bear's name is actually Bjorn.
    • Zygmunt Molotch, the villain of the Ravenor series, can subdue an opponent by speaking their full name using a Chaos skill called "Enuncia". (He can also briefly stun them using less than their full name, but this is much less effective.)
      • Toros Revoke, of the same series, is much better at using Enuncia as a weapon. He's able to shatter bones, burst internal organs, and drive back a daemonic assassin using it.
    • In Grey Knights, Ligeia's gibberish is actually the True Name of Ghargatuloth, and Alaric is the only one to realise this. It pays off.
    • Saying the name of a greater daemon while in its presence will send them instantly back to the warp. Their true name, mind. If a greater daemon of Khorne says its name is "Bob", it's probably lying.
    • The Grimoire of True Names. Incredibly rare and potent artifacts, guarded by the Daemonhunters (who else?). In the Grey Knights novel, Ligeia finds such a Grimoire - known as the Codicium Aeternium, thought to have been lost for centuries - after the capture of a rogue Inquisitor, which sets the Grey Knights off on the quest featured in that book.
    • In The Unremembered Empire, a daemon tells its true name to Damon Prytanis just before it goes to kill him, believing that it already knows his true name. It didn't stop to think that Prytanis wasn't his real name.
    • Note that saying or even knowing a daemon's true name is not free. An Imperial saint lost her sainthood using a daemon's true name to banish it, which purportedly included knowing many other true names. Others have gone insane from holding a true name in their head. Even a fragment of a true name can be debilitating or lethal to the untrained.
  • One series where the wizard does have a huge, unpronounceable name is Larry Niven's The Magic Goes Away.
  • Andre Norton
    • In Witch World novels, name magic is routine, and so powerful than the witches of Estcarp hide them from everyone.
    • In Dread Companion, Kilda is saved from being hunted by a creature that calls the name of the hunters. Later, he tells her that they must obey their names, it is the law.
  • In Scott O'Dell's Island of the Blue Dolphins, the protagonist's father accidentally introduced himself to the captain of the hunters' ship using his secret name rather than his common name. He later fell in battle, and his people blamed the public use of his secret name for it.
  • In The Gift by Patrick O'Leary, dragons can be commanded by their true names… except that, as it turns out, they all have the same one (the ancient word for "dragon"). They were purposely conditioned that way centuries ago by wizards who wanted to keep them in line.
  • In Christopher Paolini's Inheritance Cycle, knowing the true name of someone lets you control them. They also have Elvish as a Language of Magic.
    • It's said that by finding out the name of the Ancient Language, a spellcaster would be able to change the meaning of words and essentially have complete control over magic in the world. In the final book, Galbatorix finds out the name, and explains how he plans to use it to stop anyone from being able to use magic again.
    • Also, this is a case of every animal/object having a true name. Though the only example thus far has possibly been Eragon's sword (It's name translates as 'fire' and when Eragon says that word in the Language of Magic, it bursts into flames as if he had cast a spell.)
    • Also, a person's True Name isn't set in stone. As they grow and mature, and their personality changes, their true name will also change to reflect this. This can come in handy, since if someone is using your true name to enslave you, you can escape by changing yourself enough for your name to change. It isn't easy, but it's possible.
      • It also has a more mundane use. If you find your own true name, it can act as a form of magical self-introspection that enables you to understand every aspect of yourself at once, the good and the bad. While this might be seen by some as a bad thing, it's portrayed as positive since it enables you to accurately assess your faults and find where you have room to grow.
    • Galbatorix combines the ability to control someone through their True Name with the fact that the Ancient Language is a Language Of Truth to force people to swear unbreakable oaths. As does Eragon. Galbatorix also cast a spell so that anyone who attempts to use his True Name against him will die.
  • In Barbara Hambly's Winterlands series (that begins with Dragonsbane), everything, even inanimate objects, have true names. Any spell stronger than basic telepathy (which can be used to discover someone's true name) requires you to Know Your Target's True Name, and you have to power the spell by "sourcing" energy from things you know the true names of. Our Dragons Are Immune To Magic because nobody can figure out what their true names are. It turns out that dragons' true names are Magic Music.
  • In Terry Pratchett's Discworld novel Mort, it's briefly mentioned that, in the old days, students at Unseen University had to "memorise the true names of everything until the brain squeaked". It's not made clear that there's any magical advantage to doing so, however. Considering the attitudes of the Unseen University faculty, it's quite likely that most of the 'learning true names' curriculum was to keep the students too busy to bother them.
    • In The Last Continent, it's stated that the Librarian has removed all mention of his own name from University records to prevent anyone trying to turn him back into a human. Rincewind knows it, and so the Librarian dissuades him from telling anyone — by holding him over a ten-story drop.
    • In Pyramids: "All things are defined by names. Change the name, and you change the thing. There is a lot more to it than that, but paracosmically that is what it boils down to..."
    • A slight variation involves the fact that giving a name to something changes its nature, as in Interesting Times (with regards to Magitek Hex) "We should never have given you a name. A thing with a name is a bit more than a thing." Also comes into play when Agnes names her alter ego Perdita. She then develops a magical form of multiple personality disorder, as Perdita becomes an actual person living in Agnes' head with her and being everything Agnes wishes she could be.
  • Similarly used in Good Omens where the Anti Christ, having been accidentally brought up by a normal middle-class family, is sent a Hellhound. The Hellhound has a bit of internal monologue all about "The Naming", saying that its master's name will give it its purpose. When said Hellhound is simply named "Dog" since that's all the boy wants, however, it ends up becoming... a dog, and all that the name implies. It's a happy-go-lucky, cat-chasing, normal, everyday dog.
    • Pepper's proper name is Pippin Galadriel Moonchild. "There are only two ways a child can go with that name, and Pepper had chosen the other one."
  • Spider Robinson once wrote of a wizard so ancient that he guided the evolution of humanity in such a way that modern larynxes simply can't form the sound of his True Name.
  • In Emily Rodda's The Key to Rondo, giving the Blue Queen your true name gives her power over you, and she can command you to do anything, up to and including suicide. In her first appearance she gains control over the heroine's beloved dog through this means; however, she doesn't gain control over the heroine, first because she believes the heroine to be someone else (and thus uses the wrong name), and then because the hero knows the heroine only by a nickname and therefore, despite calling her by her name repeatedly, doesn't reveal her real name.
    • In the final showdown, the Blue Queen learns the hero's name, and controls him as a hostage from that point on, effectively removing him from battle and threatening his life for a Friend or Idol Decision.
    • In the third book, The Battle for Rondo, it's how they managed to defeat the Blue Queen. After Leo figured it out and tried to use her true name, Indigo, to stop her, the Blue Queen rejects it and suffered for it.
    • In another of Emily Rodda's books, Deltora Dragons, the dragons believe that knowing a fellow dragon's name gives you some type of power over them.
  • Jonathan Stroud's The Bartimaeus Trilogy: Magicians lose their names when they start training and choose new ones to be called by later on.
    • Unfortunately, unlike most examples, this still doesn't work — the new names aren't nearly as powerful as their birth names for magical purposes, but can still be used to mess with them.
    • Demons are also summoned and controlled through their names, though its revealed that this is less because it's their true name, but that when a magician first summons a demon he gives it name, and that name can then be used to call them. Bartimaeus and many other demons also have many names, but only Bartimaeus actually seems to have power over him.
  • Although no specific reason is given, The Ents in The Lord of the Rings are likewise surprised at people giving out their real names, though the long-winded Entish language probably makes it moot for them (an Ent's true name can go on for days). Gandalf also complains that Bilbo was smart enough not to tell Smaug the dragon his name, but could have avoided rather more trouble if he hadn't told Gollum.
    • While not exactly magic, calling Sméagol/Gollum by one name gets a very different reaction than calling him by the other.
    • The protagonists also rarely speak Sauron's name out loud, usually using his title "Dark Lord", instead. Though it isn't explicitly stated, it's implied that speaking it too often in wrong situations could make him aware of the speaker. Also, when Pippin uses a Palantír and accidentally makes contact with Sauron, the first thing the Dark Lord does is demand his name, which Pippin refuses despite the resulting mental torture - again, it's implied that telling your own name to Sauron could make you fall under his power.
    • Tom Bombadil teaches Frodo Baggins an extended verse which will bring Tom to the aid of anyone within his territory who utters it, and this verse includes his name.
    • Dwarves in Tolkien are described as having true names in Khuzdul, which they never reveal, not even on their gravestones. The names they are known by (Thorin, Balin and so on) are by-names.
  • The Chronicles of Amber series by Roger Zelazny, in Guns of Avalon, when Strygalldwir comes to Corwin's window. He offers his name but says "Conjure with it and I will eat your liver." Only seems to apply to that certain brand of demon, though.
  • In The Changing Land, also by Roger Zelazny, one of the characters is a demon named Melbriniononsadsazzersteldregandishfeltselior. Usually conjurers trying to summon him messed up his name during the summoning and binding ritual - which left the demon free and ready to have fun. Unfortunately for the demon, another character, wizard Baran, was from a land with very complex language - so the name of the demon was quite manageable for Baran.
  • The Death Gate Cycle, in one of its appendices, describes rune-magic in terms of true names. What a rune-magic spell does is change an object's name, thus causing the object itself to change. The Sartan and Patryn (battling Witch Species who use this magic) are each affected by it in different ways:
    • Sartan magic emphasizes the spoken runes; as such, a Sartan's true name in their own language can be used to control them. Most Sartan go by pseudonyms as a result, and when Samah introduces himself to a stranger by his true name, this is a sign of both his power and arrogance (since it shows he doesn't fear magical attack).
    • Patryns emphasize the written runes, which they tattoo on their bodies. A Patryn's true name is therefore not the spoken form but the "heart-rune" inscribed in the center of their chest. Messing with this rune can seriously screw up a Patryn's ability to work magic as Haplo found out the hard way.
  • A major part of the mythology of Skulduggery Pleasant, and the reason why the magically inclined go by self-referential nicknames. In the Skulduggery Pleasant books, everyone has a True Name (theoretically; the only known listing of them was destroyed) and a Given Name (your full given name, e.g. on a birth certificate), and may also take a Taken Name.
    • Your Given Name can give someone else power over your actions... to an extent, sorta like hypnotic suggestion. Taking a new name seals your given name, preventing its misuse. However, if someone else learns your True Name, they gain absolute command over you. However, if you learn your own true name (But not as a result of a command), you gain a direct link to magic itself and turn into a Physical God. It's generally advised to then use a magical ritual to seal your True Name to prevent others manipulating you.
  • The Star Wars Expanded Universe novel New Jedi Order: Traitor has an interesting bit of philosophy that seems to be the inversion of this trope: its proponent states that in naming a thing, you limit it, and in doing so you are saying a half-truth, or worse, a lie.
    • At least superficially, this view of words somewhat matches up with a few religions and philosophies, like Zen. If the universe is One whole, then the mere act of trying to describe the Oneness, or one's experience of it, divides and diminishes it into misleading categories.
    • There is also the Firrerreo race introduced in the novel The Crystal Star, who have a superstition about speaking someone's name out loud in order to have authority over them. As a result, they never tell others their real name unless necessary, revealing another Firrerreo's name is considered a sign of grave disrespect, and one of the highest displays of respect is to not use the name of a Firrerreo even though you know it.
    • Conversely, there's the Gand race, for whom the name you use to refer to yourself is a significant indication of how important you are. If you're just another schlub, you refer to yourself as "Gand" (as in "Gand went to the store today"). If you're slightly more important or recognizable, you can use your last name ("Obama went to the store today"). If you're a major figure, you can use just your first name. Only individuals who have achieved truly staggering feats or become exceptionally important can use pronouns like "I" or "me", since it's assumed that everyone will already know who this person is. If you're feeling ashamed or have committed a faux pas, you might go down a step or two, to indicate that you acknowledge your mistake.
  • In the (A)D&D novel Pool of Darkness, a demon, due to a curse or another, had to speak his true name backwards, as a Verbal Tic. He used his backwards name as an alias in human form.
    • In fact, that had a second fiend (a succubus) whose human form also went by an anagram of her real name, and who was forced back into her natural shape when called by the latter (though it didn't seem to otherwise interfere with her power).
  • In John C. Wright's The Titans of Chaos, a god casts a spell on the title characters who have three sets of names apiece; he fails because one of them hid one set from him. Granted, someone named Quentin Nemo should have been a clue.
  • The Name of the Wind focuses heavily on this. Actually learning the names of things, though, is regarded as really, really difficult, and unless a person actually understands the name, he will only hear the common name for the object. Kvothe badly wants to study naming, but is refused by the somewhat-loopy but brilliant Master Namer.
    • At one point, Kvothe calls the Name of the Wind in mindless fury against Ambrose Jakis.
    • Tamborlin the Great was known to have the Name of most or all things, and his exploits were correspondingly astounding.
    • In the sequel, much more of Naming is revealed. One of the Masters of the Arcanum calmly sticks his hand in fire and plays with the coals after speaking the Name of Fire. Many things have names, as evidenced in the variety of first Names that Elodin's class had found.
    • As with much of magic in the series, it's one a scale of Awesome but Impractical - mundane solutions are almost always best when possible, but Sympathy and Alchemy can do some things that can't be done a mundane way, and Naming can do some things even those arts can't.
    • Duels between Namers are terrifying things. A Namer with two or three names can tear up the surrounding area for miles with impunity.
    • In the very distant past, not only were there people know knew the Names of things, but those who created new Names. It was a time when humanity had godlike powers and created new realms.
  • Make Way For Dragons concerns the proper name for things. Renaming means reshaping. It's a very tricky situation, as reversing is impossible.
  • In the Evie Scelan series, Evie is surprisingly casual about using her true name for someone who knows that magic exists and names can be used in it.
  • This was sometimes the case in Forgotten Realms. Ariel Manx in the Avatar Trilogy, for example, usually uses the pseudonym Midnight as a protective measure.
  • The Yn shamans from Janet Kagan's Hellspark use name magic. The protagonist uses this to talk one down from a rage, pointing out that she doesn't actually know the true name of the person she's angry with and her curse is likely to go awry.
  • In The Iron Dragons Daughter, knowing someone's - or even something's - true name can give you almost total power over that someone. Main character Jane, being a human not of that realm, doesn't have a "true name".
  • Invoked, referenced, and played as straight as a non-fantasy can play it in Vernor Vinge proto-Cyberpunk story, "True Names", in which the dangers of using your real name on the Internet is a major plot point. Criminal hackers (computer wizards) must keep their identities hidden from each other or risk blackmail or worse.
  • The reason why it's so hard for the title magicians in Jonathan Strange & Mr Norrell to find and summon the Raven King is that they have no idea what his real name is.
  • In Neil Gaiman's Anansi Boys, Mr. Nancy (Anansi) and his sons apply this trope in a few ways, one of which being the humiliation of a major villain.
  • In the Mercy Thompson books, the fae can use someone's true name to control them. True names aren't any sort of magical secret knowledge, although older entities seem to prefer using nicknames and aliases for this reason. In Hunting Ground a fae greets Anna with her full name and the name of her pack in order to subtly threaten her. Later in the same book, a fae addresses one man with the name he was given at birth and his parents' names, and uses that power to issue him an order he can't resist.
  • In The Demons Lexicon by Sarah Rees-Brennan, demon-summoning requires knowledge of the demon's true name. In a subversion, it's eventually revealed that demons, who tend not to use language, don't actually care what name you call them—what matters is that you believe it's the demon's true name.
  • Susan Cooper's novel The Dark Is Rising (part of The Dark Is Rising series). Merriman Lyon defeats Maggie the witch-girl (an agent of the Dark) through his knowledge of her true name.
  • In Cate Tiernan's series Sweep, everything has a true name, from plants to people. One of the main characters actually finds out her fathers true name and uses it to put a binding spell on him so the other characters can strip him of his powers.
  • Low caste Goreans frequently hide their true names from others due to a fear of this trope.
  • In A Name to Conjure By, a Summon Everyman Hero spell brings the protagonist to another world where his full, exceedingly long name is a powerful spell. A magician tries to learn the name with a spell, but fails because he can't read the English alphabet.
  • In Melusine, Mildmay warns Ginevra not to use her real name when they go to meet Vey Coruscant. At one point she says his name out loud, but at the time she only knew him by an alias.
  • In The Book of Three, the first volume of the Prydain Chronicles, Prince Gwydion is the only one who can defeat the Horned King because he's the only one who knows his real name, which is never revealed.
  • In Simon Green's Nightside series, the second book features the Speaking Gun that can unmake anything ever created by saying its true name backwards. It's touted as the only actual item that can destroy an angel, whether nefarious or holy. (Little difference between them. Nefarious angels will destroy you because they are evil and enjoy it. Holy ones will destroy you because you're either in the way of the Plan, or simply because you're flawed.)
  • Quantum Gravity: True Names exist and work on all sapient species...while in Alfheim, home to the elves. They work on elves anywhere, but especially in Alfheim. It's the type of power that makes the target do something, though the exact power has yet to be confirmed: It made a target do something he didn't want to, but was worded very specifically and whether the action went against his nature is unknown.
  • In Robin Hobb's Realm of the Elderlings series, no dragon could lie to someone who demanded the truth with her true name or used it properly when asking a question. Nor could a dragon break an agreement if she entered into it under her true name.
  • George RR Martin's book Dying of the Light has a line that invokes this, when the viewpoint character's ex-girlfriend, explaining how she disliked the pet name he'd given her, says (approximately), "Give a thing a name and it will somehow come to be. All truth is in naming, and all lies as well, for nothing distorts as a false name can, a false name that changes both the appearance and the reality...."
  • Paranormalcy's Faeries run by this trope, which, when combined with Adults Are Useless (or Adults-Are-Too-Pigheaded-To-Realize-The-Consequences) leads to some serious trouble. Especially since some of the Faeries are resentful about it and are all to willing to get revenge in any way they can. A good example is Reth, who does a pretty spectacular job at twisting every command given to him, though he's not particularly nasty... until later.
  • Inverted in the Doctor Who Expanded Universe Eighth Doctor Adventures and Faction Paradox novels. During the Second War in Heaven, the Time Lords battle a race of entities referred to as 'the Enemy'. The Enemy does have a true name, but the Time Lords almost never use it, as by naming the Enemy, they create the risk of the listener misunderstanding the Enemy as a physical alien race fighting the Time Lords in a physical war. The system of time we know (a steady progression of entropy, cause and effect, Timey-Wimey Ball, etc) is an invention of the Time Lords, and the Second War in Heaven is fought to prevent the Enemy from replacing it with whatever system they would impose on reality. Thus, the War is so surreal and metaphysical by normal standards that naming the Enemy causes non-Time Lords who cannot understand the principles at work to view the Enemy as a hostile invading force (false), rather than a fundamentally different and opposing system of time. Thus, the Enemy is a process, an unnatural force of nature, a series of events, rather than anything concrete.
  • Elizabeth Haydon's Symphony of Ages novels live on this trope. Especially in her first three books of the series, true names are bandied about or kept secret so they can't be abused as plot points practically every five pages.
  • In The Lost Years of Merlin series, by T.A Barron, names are very important, magically; Naming is even one of the Seven Songs of Magic. If someone knows the true name of someone or something, they have control over it (only Merlin knows the true name of Excalibur, so he's the only one with total control over it. Merlin also learns his own true name at the end of the last book.
  • In the first book of The Kane Chronicles, this is how the heroes manage to enslave Set.
    • They also use this to revive Ra and save the world, but Set tricks them to return his true name to him along the way, thereby losing their control over him in the third book.
    • Also in the third book, Sadie has to convince an barely conscious and dying Carter to give her his secret name, or "ren", so that she can use a healing spell and save his life.
  • Actually an important point in the Chronicles of the Emerged World, where the Orcish-like Fammin serving the Tyrant all have names which are actually magical words used to force them to obey the orders. This is the Wrong Ones' main source of fear and Angst.
  • In Salamander, the name a wizard uses must be their true name (or a shortened form of it), or else their magic fades. A superstition in-story is that naming a child after a dead wizard will give him some of that wizard's power. The tradition was started by an immortal wizard who wanted to be able to hide without changing his name.
  • The short story "True Names" by Harry Turtledove is a parody of this trope. It's set After the End in "Eastexas", where the remnants of the American people have reverted to ignorant barbarism. A tribal shaman finds a book about taxonomic classification and believes the scientific Greek names given for animals to be their 'true names' that grant the one who knows them power over them.
  • In Krabat. Fortunately, The Hero doesn't know the real name of the girl who's able to save him. (Another one wasn't that lucky.)
  • Stina Leicht uses both this and Words Can Break My Bones in "Of Blood and Honey". Using someone's true name gives you power over them; you can call them to you or command them. However, it has to be their complete true name: Liam's parents survive Henry's trap because Henry doesn't know Liam's full name, and thus Liam can resist long enough to break through the stone circle.
  • In Teresa Frohock's Miserere: An Autumn Tale, telling your name is dangerous. And you need to force a demon to tell you its name to exorcize it.
  • In Griffin's Daughter, The Nameless One's true name had been stricken from the history books to keep someone from invoking this in an attempt to invoke him enslave him or claim his power.
  • Fractal Prince features a scifi variation of this trope in the City of Sirr, where True Names are a part of an elaborate control system that allows baseline humans limited use of certain posthuman technologies that should be too complicated for them to operate, while simultaneously keeping them inaccessible to the posthuman Sobornost who would forcefully assimilate the city if it was unprotected.
  • Cold Cereal by Adam Rex turns this into a Brick Joke. The main character is established with the name Scottish Play. He got his name when his father, a struggling actor, got a break that changed his life and promised he'd name his firstborn son after the role. At the end of the book, when Queen Titania uses all the heroes' names to incapacitate them, Scottish Play manages to break free of her spell because that wasn't his true name and that it's not supposed to be spoken out loud.
  • In Patricia C. Wrede's Snow White and Rose Red, a character casts a Love Spell on one of the heroes. The spell requires his name, however, and she's unaware that he doesn't go by the name he was baptized under. Consequently it has no effect on him whatsoever.
  • All of the Insequent from the Last Chronicles of Thomas Covenant can be compelled by their true names, and as such they usually go by imposing sounding titles (the Theomach, the Vizard, the Mahdoubt, the Harrow, the Ardent, the Auriference, etc.). It's implied that any Insequent knows (or can readily discover) any other Insequent's true name, but they go to great pains to conceal them from outsiders. Only two are revealed in the novels- Kenaustin Ardenol (the Theomach) and Quern Ehstrel (the Mahdoubt). The Ardent manages to make the Harrow back off in one scene merely by threatening to reveal his true name to the gathered companions.
  • In Orion by Ben Bova, the title character attempts to introduce himself to a stone-age tribe. Due to belief in this trope, things go very badly.
  • In the short story Equoid, of The Laundry Series, the narrator comments on how "Bob Howard" is just a pseudonym he's calling himself in the reports; because he would never do something as daft as write his true name on paper and "give extradimensional identity thieves the keys to our souls."
  • Everybody has true names in Messenger, and they're given by the psychic Leader. This is a benevolent version as the true names help people discover their purpose in Village (eg. the man now called Mentor becomes a schoolteacher), although they do seem to hold some power as seen when Matty is easily able to rein in his puppy after using its true name.
  • In The Icewind Dale Trilogy, R. A. Salvatore uses true names a little differently than in Dungeons & Dragons, where they are different from the creature's given name and hard to find out, even though the books are set in the Forgotten Realms setting. (It's not the last time he gets the details wrong from the existing lore.)
    • In The Crystal Shard, the demon Errtu's true name, as opposed to being something hidden, is just "Errtu", the name he openly uses. He can sense the name being pronounced at a distance, though doing that gives one no power over him.
    • In Streams of Silver, a wizard tortures the spirit of another wizard by using his true name.
  • Though not strictly necessary, knowing the true name of a spirit you're trying to use necromancy to bind in The Old Kingdom adds power to the spell. Chlorr of the Mask serves Hedge in part because she was bound "by her secret name" Clariel, and in the last book Lirael is able to dispose of a Greater Dead spirit with relative ease owing in part to her using a quick spell to discover its name before it could attack her.

    Live Action TV 
  • One of the few ways to break Jasmine's control in Angel is to hear her true name spoken.
    • More specifically, hearing her name spoken stripped her of much of her power, and one of the abilities she lost was her ability to brainwash people. She also suffered permanent Glamour Failure.
  • Doctor Who:
    • The Carrionites, who are implied to be the inspiration for the witches in Macbeth and possibly this whole true-name thing. Unfortunately, with them, It Only Works Once. Apparently it also works in reverse, as the Carrionites try to overcome the Doctor by this means, but are unable to discover his true name.
    • Inverted in the Series 4 episode "Silence in The Library" when the Doctor finds out that archaeologist River Song knows his real name (not just "The Doctor"). He flat-out says that "there's only one reason" why he would ever tell anyone his name, with their conversations and River's comments to Donna making the implication (but only the implication!) that River could be his future wife. He also adds that there is only one 'time' when he could tell anyone his name. This, plus River's use of the Tenth Doctor's grim Catch Phrase for people he knows are going to die ("I'm sorry, I'm so sorry") leads to the theory that she will be present at his death.
    • On the planet Trenzalore the Doctor will at some point be asked the first question, the oldest question in the universe — "Doctor who?" — and will be unable to answer other than truthfully. The Silence are willing to kill him to stop him ever answering; their core belief is that silence must fall (referring to his death) when the question is asked.
    • In the classic serial "Silver Nemesis," Lady Peinforte claims to know the Doctor's true name.
    • The Doctor's true name is said to have been written in the Medusa Cascade itself, possibly as a result of sealing the Rift there back when he was a mere boy of 90.
    • According to Clara, "The Doctor" is his true name, because it's the name he chose for himself that describes who he is and what he does. The Time Lords seem to agree because, despite remaining in their pocket universe, they send him an extra regeneration when she points this out.
    • Implied in "Flatline", where the last thing the Doctor does before he can defeat the monsters (defined by their formlessness and incomprehensibility) is announce a name for them.
  • Paige from Charmed has the power to 'orb' objects by focusing on and verbalizing them. This proves to hold a prominent weakness in the episode "Sense and Sense Ability" when the Crone renders her unable to speak and hence to use her power.
  • On So Weird Bricriu could only be banished if you know his name. When he possesses Fi's brother, he challenges her to figure out his name, at three guesses, giving her almost no hints. Near the end of that episode, Fi renegotiates and he lets her have as many guesses as she needs for one hour. She then uses a program to goes through every possible letter combination until it gets his name; how she got her computer to do that is unknown. In his (and her) final episode, his name is wiped from her memory when Fi's connection to the spirit world is removed. However, she didn't need it this time: he was in her computer, so she just traps him on a floppy drive.
    • Subverted during his second appearance, when he possesses Molly. He manages to trick Fi into letting him stay for 24 hours. Her agreement to this constitutes a Magically Binding Contract, so even his true name can't be used to banish him during that period.
  • In Stargate SG-1, the team is looking for the Holy Grail. They are warned that part of the quest will involve battling a dragon and that the only way to stop it, is to speak the name of the one who controls it. Daniel theorises that this is based off this trope, but his actual explanation is that the dragon is a machine of some kind and that the name is some kind of code word.
    • They are told they will need to speak "the guardian's name." They assume this means they have to guess the name of the dragon; it is not until they are being attacked by it that Daniel figures out "the guardian" is the person who set up the whole quest: Morgan Le Fay (or Ganos Lal, as it was her true, Ancient name that beat the dragon.)
  • A sketch on The Young Ones showed two demons in Hell complaining about their own names being too weird. Apparently they could only be summoned to Earth to collect souls if a mortal said their names, and this unlucky pair were called Orgo and Ftumch. Thanks to a misprint in a newspaper Rick reads aloud Ftumch manifests, and after failing to claim Neil and Vyvyan settles for a guy who had come to award one of the flatmates with a car through a contest.
  • In the Star Trek: Voyager episode "Spirit Folk", holograms of superstitious townfolk try to apply this trope and fail.
    Townfolk: If you can get a spirit to reveal his true name, you'll render yourself impervious to his charms! What is your true name?
    The Doctor: I haven't decided on one yet.
  • In an episode of Babylon 5 where Ivanova was using an alien supermachine to telepathically search for the First Ones, she accidentally astrally ran into the Shadows. She tried to escape, but had trouble breaking contact:
    Ivanova: I can't. It... it knows I'm here. It knows my name!
  • In a sketch on Alexei Sayle's Stuff involving a Masonic Lodge style religious cult based around pencils, mention is made of "The Great Architect of the universe, whose name we cannot say... for it was written in pencil and got a bit smudged."
  • In an episode of NCIS: Los Angeles, the episode's villain, an information broker, manages to coerce Callen (whose first name is unknown by all, including him, with the exception of the fact that it starts with G) to obey his instructions by saying "I know what the 'G' stands for". The instructions nearly get Callen killed because the broker ordered him to stand in for the broker in dealing with some troublesome clients. Later, when Callen and the team find the broker's hideout, Callen gets the chance to learn for himself what the G stands for when he finds a file labelled "Callen, G" but is forced to abandon the file when the broker's security measures trigger explosives/incendiary devices that destroy all the files and equipment in the base.
  • In the eighth season of 24, Dana Walsh receives a call from her ex-boyfriend revealing that he knows that her true name is Jenny Scott, and forces her to work with him under threat of revealing it. Since she's a convicted felon and The Mole inside CTU, she does as he says in order to keep him quiet.
  • In Merlin, many Druids and Creatures of the Old Religion refer to Merlin by his true name of "Emrys".
    Merlin: Why does he call me Emrys?
    Dragon: Because that is your name?
  • In the first episode of Once Upon a Time Snow White and Prince Charming are warned against revealing their names to the imprisoned Big Bad Rumplestiltskin.
    Guard: If he knows your name he'll have power over you.
    Rumplestiltskin: Snow White and Prince Charming. You insult me. Step into the light and take off those ridiculous robes.
  • In MythQuest, Matt tells his daughter Cleo that since she took the place of Isis, she has all the powers of Isis, which came from Isis' discovery of Ra's true name.
  • In the Tales of Kolmar trilogy, knowing someone's true name gives power over them - they can be controlled when their true name is used. The Kantri (dragons), for example, have long names like Khordeshkhistriakhor, but they use a diminutive of their true name for everyday use (for example, that dragon is known as Akhor), and share the true one only with their lover and possibly best friends.
  • In Supernatural, knowing a supernatural being's name or mark allows you to forcefully summon them to your location.


    Mythology and Religion 
  • Older Than Dirt: Ancient Egyptians actually believed in the spiritual power of names, especially of one's own soul and those of the gods; for example, Isis (Au-set/Aset) once tricked the high god Ra into giving her a great deal of power by creating a serpent whose venom only she could counteract and having this viper bite him. He suffered but as a god was unable to die. She wrangled his True Name from him in exchange for the antidote which ended his suffering.
    • There was also the belief that if you destroy all records of someone's name, their 'Ka' would no longer exist. This has been attempted on unpopular pharaohs (like Akhenaten by everyone, and Hatshepsut by her successor and stepson).
    • Likewise, in the Egyptian Book of the Dead, the names of a number of guardians of gates in the netherworld are listed; by knowing them, the deceased gains power over them and will be able to pass through those gates.
    • Furthermore, the goddess/incarnation of justice, Ma'at, has a true name that is not written anywhere because of the danger that someone might decide to speak it backwards.
  • In the original writings of The Bible, God's name is written around 7,000 times; the four letters that make it up are called the Tetragrammaton. Later on the Jews became superstitious regarding the name and would not say it, and since the original written form of the Hebrew language only consisted of consonants, the original pronunciation was lost. Another theory is that, according to Wikipedia, four letters of the Hebrew alphabet can double as vowels, ie mater lectionis, including Yodh "Y, I, J, or a vowel"; He "H, silent, or a vowel"; and Waw "W, V, or a vowel"; which all make up the Tetragrammaton. That is why in Gnostic literature, one of the names of the demiurge is Iao, Jao, Yao, or any other derivative form you can get from using the mater lectionis method. Either way, the loss of the correct pronunciation of the name of God in the present can make others to mistakenly believe that the name of God was used in this manner by those who did know it, while actually the name was well known and often used during Bible Times. It was a crime for the Jews to practice magic.
    • And one of the privileges God granted to Adam was to name all the animals in creation.
    • The Jewish legend that changing the name of a gravely ill person can hide him from the Angel of Death. Similarly, it is against custom to name a baby after a currently living relative, since, should the Angel of Death seek out the older family member, the younger might be taken by mistake.
    • Shemyaza, one of the Grigori/Watchers (the angels who were enamoured by human women and came down to earth to take them as their wives) was seduced by Istahar into revealing God's true name. He regretted it later, and threw himself into the constellation Orion.
  • In Homer's The Odyssey, Polyphemus the Cyclops is tricked by Odysseus/Ulysses. Odysseus claims his name is "no man," causing the Cyclops to be thought insane or cursed when he says that "no man" blinded him. However, Odysseus seals his fate after escaping when hubris prompts him to announce his True Name, allowing Poseidon, the Cyclops' father, to take revenge by sending a storm to destroy Odysseus' ships.
  • In Norse Mythology, specifically some re-tellings of the story of Sigurd, telling a dying person (and particularly a dying Dragon) is a bad idea, because if a dying person (or Dragon) curses you by name, that curse is guaranteed to be carried out.
  • Traditional Shinto beliefs include a form of magic called kotodama, in which you can compel your target to do almost anything if you know their true name. Series that feature this include Wagaya No Oinari Sama, Tactics, and Her Majesty's Dog.
  • Finnish mythology has a variation of this trope: knowing something's birth gives you power to reverse it, and gain control over it. There are hundreds of fractures of "birth-words" for various things, gathered from oral tradition. For example, knowing the Birth of Iron should allow one to treat wounds caused by an iron weapon.
  • The City of Rome's true name was an actual state secret kept as jealously as the US missile launch codes which is understandable given their beliefs. It was illegal to speak it out loud lest priests from a enemy state use it to curse Rome.

     Other Sites  
  • SCP Foundation, SCP-992 ("Gaia's Emissary"). SCP-992 has the mystical ability to know the true names of things, including living things such as human beings (both living and dead) and plants. He is able to create non-living things he has named, including unusual weather and the Aurora Australis.

     Tabletop Games  
  • In Mage: The Awakening, knowing a person's real name makes using magic on them from a distance much, much easier. As a result, mages take "shadow names", sharing their true names only with their closest allies (as sometimes having someone be able to cast spells on you is beneficial).
    • The Awakening itself is supposed to result from a prospective mage metaphorically travelling to a Supernal Realm and inscribing their name on its Watchtower.
    • The Old World of Darkness version, Mage: The Ascension, had something similar with several of the Traditions - the Order of Hermes mages had a 'True Name', which was an Enochian phrase that described them. They concealed it in a Shadow Name, and many higher-powered mages found ways of inserting traps into the shadow name that would harm enemies trying to determine their True Name. Knowing a Hermetic's true name had a similar effect as in the new game. The technomantic Virtual Adepts had something similar with their Internet handles - but someone who goes by the name pronounced 'Coyote' could well be C0y0t3, (oy0t3, or any other 1337 variant.. good luck figuring out which would be their True Name...
  • Mummy The Resurrection uses an Egyptian-influenced truename magic system called "Nomenclature." One of the system's ultimate powers is the ability to erase someone or something's name, removing them from existence (by making the universe forget they exist).
    • On the Old World of Darkness note, the Art of Naming from Changeling The Dreaming no doubt caused many a Storyteller endless distress. The ability to rewrite someone's true name (essentially, the core of their being) does come with the risk of the Fates noticing you...
    • Continuing on with the oWoD name craze, Demon The Fallen gives characters three names. A Fallen has whatever name or alias they are using in the real world. They also have a Celestial Name, which gives them remote communication and viewing with anyone who knows it. And finally they have True Names, which can be used to summon, bind, and exorcise them. Guarding one's names against hostile parties could be a very important part of the game.
    • And then there were the Tremere in Vampire: The Masquerade, whose projects included studying the Human Genome Project and the human genealogical records of the Church of Latter Day Saints in conjunction with one another in order to discern the true name of the human species.
  • Dungeons & Dragons
    • 1st edition.
      • Several spells usable against creatures from other planes (Banishment, Binding, Planar Call and Torment) required the use of the creature's true name.
      • In their original appearance in module S4 The Lost Caverns of Tsojcanth, certain other planar spells required knowledge of the target's "personal name" (another term for True Name): Abjure, Dismissal, Dolor.
      • The Call and Truename spells were usable against any living creature with a true name, not just otherplanar creatures.
      • The Prison of Zagyg magic item required knowing the target's true name in order to capture it.
      • The Oriental Adventures supplement said that in Oriental lands a person's secret name is given to them at birth and never revealed to others. Learning a person's secret name gives you magical power over them.
      • OD&D Supplement IV Gods, Demi-Gods & Heroes and the 1E Deities and Demigods Cyclopedia. In the Celtic mythology every creature had a secret name linked to its soul. Anyone who knew the name could control the creature or simply make them die. The deity Oghma automatically knew the secret name of any non-godlike creature.
      • Dragon magazine #15 article "Dragon Magic". All dragons have a secret name that they keep carefully hidden. If a dragon's true name is spoken, anything brought about by the dragon's magic is dispelled and the speaker can demand one (and only one) service from the dragon.
      • Dragon magazine #50 article "True Dragons". When a dragon's True Name is spoken, there's a 5% chance the dragon will hear it, no matter how far away, and know the distance from and direction toward the speaker. A dragon is immune to Charm and Hold spells and magical control devices unless the caster speaks its True Name. If someone drinks a Potion of Dragon Control and knows a dragon's True Name, the dragon gets no saving throw vs. the potion. If someone speaks a dragon's True Name to it and makes a request the dragon must grant it.
      • Mezzodaemons and nycadaemons had personal names which they kept very secret. If an archdevil, demon lord or other powerful infernal creature discovered their name, it could be used to control the daemon.
      • Both demons and devils had a Speak of the Devil variant. If the name of a demon lord was spoken aloud there was a 5% chance it would turn its attention to the speaker. Each devil had a talisman with its name on it, and speaking the name on the talisman would call forth that devil to appear before the speaker. In both cases, unless the demon or devil were controlled, it would attempt to kill the speaker.
    • 2nd edition AD&D said that knowing a lich's true name conferred power over it.
    • 3rd Edition:
      • The supplement Creature Collection. In order to destroy an Unhallowed, its True Name must be learned and spoken aloud to attract the attention of the gods before attacking it.
      • The supplement Book of Exalted Deeds goes into some detail with the Words of Creation. As a precursor to the Celestial tongue these are considered inherently good (no evil creature can speak them or bear their sound) and include creatures' true names. A true name is unique to a single individual and is expensive and time-consuming to research, but discovering it allows the character to perform various useful tricks on them, anything from a penalty on saves to casting teleport or greater teleport on them, at the cost of 5d4 points of nonlethal damage to the speaker.
    • Edition 3.5 had a character class called the "Truenamer," who used this style of magic by learning the language of creation. A truenamer can technically use any utterance (spell) he knows any number of times per day, limited by the fact that the universe hates being screwed with, so spells get progressively harder each time per day they're used. That, and they screwed up the main way to use it so badly that it's nigh impossible to say it more than once.
  • Daemons of Chaos in Warhammer and Warhammer 40,000. The Ordo Maleus maintains those which are known in The Grimoire of True Names, which in-game enables those equipped with a Grimoire to cut the Daemon's Weapon Skill (ability to strike blows in close combat) in half. (Hey, it can't kill you if it can't hit you!) Sometimes Greater Daemons and Daemon Princes will go so far as to announce their true name, just to point out how doomed whoever stands against them is.
    • Works mechanically in two Dark Heresy supplements. Knowledge of a Daemon's True name gives the player bonuses to summoning and commanding that particular daemon. It is also featured in the "Thy Name I Keep" background where a character starts knowing a daemon's true name (or at least a fragment of it).
    • In Black Crusade, player characters can receive a Daemonic name from their patron Chaos God. This brings them additional Infamy but should an opponent discover the name they gain an additional Infamy/Fate point (which can be spent to reroll failures, enhance successes or even avoid death) when fighting said player.
  • In GURPS Magic the alternate rules suggest that knowing someone's true name (which can be things like DNA or Social Security number) give a very large bonus on targeting them with a spell. It also makes it easier to control summoned creatures.
  • The supplement book Mythic Egypt, written for both Rolemaster and the Hero System, naturally discussed true names. For purposes of magic in that setting, many spells meant to affected others required knowledge of their true name first (though there was also a spell to discover that by observing somebody directly which naturally didn't have that prerequisite) or otherwise simply wouldn't work, and one of the supernatural races of the setting had the explicit weakness that all of them shared the same true name...that had gotten out long ago.
  • In Legend of the Five Rings, the "Lying Darkness" had avoided being named at the creation of the world. This left it undefined and without limitations, and it tried to unmake the world. The world's heroes were finally able to stop it by gaining the power to name it, thus fixing its nature and imparting the qualities of the (previously existing, but no longer used) name Akodo.
    • Also, name-based magic is practiced by non-rokugani. Within Rokugan, it is practiced by the nezumi (rat people) and an angered nezumi shaman can cause a minor Cosmic Retcon to Unperson you if he snatches your true name away.
    • Oni can do something similar. They are nameless in their native realm and can't remain in the mortal world unless someone lends them a name. If the oni ever fully wrests the name from its original owner, the now-nameless victim is forced to obey the oni's commands.
  • Exalted features a reversal with She Who Lives In Her Name. Anyone who hears her true name becomes a drone who can only meditate on the inherent harmonic perfection of it.
  • Almost all magic in the Earthdawn system is based off of Names. The importance of Names in the system is emphasized by the fact that the collective term for all sentient races is "Name-Givers."
  • Shadowrun
  • Amber Diceless Role-Playing game (based on Roger Zelazny's The Chronicles of Amber stories).
    • Using the target's true name is necessary or helpful when using certain Power Words. Including the target's true name makes the Power Word "ASKIIR!" (Psychic Disrupt) much more effective on it.
    • It is necessary to use a target's true name when using the Power Words "KROLAK!" (Neural Disrupt) or "SCHANG!" (Resume True Form) against it. If the target does not have a name, the user must have a higher Psyche score to use those Power Words against it.
  • Hot Chicks RPG. When casting the Bind Spirit spell, using the spirit's True Name reduces the spirit's chance to resist the spell, as well as making the caster the spirit's hated enemy.
  • Witch Hunter: The Invisible World.
    • Knowing a creature's True Name allows the casting of or enhances the effect of the following spells: Spirit Son, Bond of Blood, Spirit Brother, Spirit Father, Magician's Mark, Sigil of Warding, Mark of the Minion, Mark of Dominion, Summoning of the Unseen, Exorcism, Exchange of Hurts, Strip Power, Compel Truth, Breath of Crom Slough, Compel Spirit, Eye of the Avenger, Circle of Summoning, The Unseen Hand, Séance, Trap Ghost, Raise the Dead, Charm and Scry.
    • Creatures can have the Mystical Price called True Name. If another being uses the creature's True Name while conversing with it, the speaker gains a bonus on the use of personality-based skills against the creature. It is also more difficult for the creature to attack someone who has spoken its True Name.
  • The Ven (the dominant species) in Houses Of The Blooded all have three names: 1. A public name known by all with no power. 2. A private name with limited power (required for certain spells) given to allies, and 3. A true private name, known to the Ven and their mother (who gives them that name) which removes almost all spell resistances given only to the most trusted of allies and usually only needed for Unbreakable Vows.
  • Ironclaw
    • One of the published adventures in the first edition had a character who was Invulnerable to attacks by anyone whose name he knew. Naturally his social skills are based on tricking people into revealing their names.
  • In the second edition, characters can take the Gift "Anonymous", where they forsake their name (meaning they can't call themselves by any name, though other characters are allowed to come up with and use nicknames for them) in exchange for a boost to their magic resistance.
  • Judges Guild adventure Tegel Manor (revised & expanded, 1989). The Banshee of the Rump family can kill someone just by speaking their True Name.
  • Mythus/Dangerous Journeys
    • Knowing the Truename of a spirit creature (demon, elemental, ghost etc.) made it easier to summon that creature.
    • A vampire had the power to gain limited control over a creature if it knew the creature's Truename.
  • Lejendary Adventures. The magical item Morben's Supernatural Shackles would only work on an intelligent target if the target's secret (true) name were spoken.
  • A Magic The Gathering card for every trope: True-Name Nemesis plays off this idea, in that once he knows your true name, he is immune to your power.
  • Hero System supplement Fantasy Hero Companion. All six types of demon (Demon Lord, Fire Demon, Amorphous Horror, Deceiver, Hordling and Hell Hound) had to obey anyone who knew their true name.
  • World Of Synnibarr. The Amazon special ability Call Spirits requires the user to know the name of a dead person in order to summon their spirit and speak to them.

     Video Games  
  • An interesting twist on the theme occurs in Planescape: Torment, in which the main character is the Nameless One. His utter lack of a name prevents mages, demons, Big Bads, and anyone else from scrying upon him, and makes it next to impossible to find any history related to him. Later discovering his original true name grants him what is possibly the largest single-shot experience gain in any RPG, ever. (2 million XP in case you're wondering.)
    • It also lets him get the best ending by itself.
    • The trope is twisted even more if the Nameless One attempts to take a name. Calling himself "Adahn" to NPCs results in an unusual focus of belief in the world; he's certainly not Adahn, but people start to believe that there is an Adahn wandering around that looks and acts just like you. Do it enough times, and eventually enough people assume that Adahn exists that... well, you can meet him yourself in a bar, proving that words cannot only break your bones, they can make them, too!
    • This is all based on the game universe, as defined by the Dungeons & Dragons sourcebooks. Sigil is a city where, if enough people believe it, it exists/occurs/whatever. A strong enough will can change the world. In fact, one of the main character's memories is of an argument he entered into with an unknown man. By applying apparently credible logic (it's never shown), he proves that the man doesn't exist. The man then reveals that if he were to believe it, he'd... and then he disappears from existence. One of the endings of the game involves the main character willing himself out of existence in a similar fashion.
  • True names become important in the last chapter of Neverwinter Nights: Hordes of the Underdark, when you become trapped in the eighth layer of Hell and knowing the true name of the gatekeeper is the only way you can return home. You can also learn the true names of several important characters in the process, including the Big Bad, which lets you do things like skip the final fight with him, force him to return to Hell and never set foot in Toril again, grant you a layer of Hell to rule as you see fit, and/or make him to serve you as a lackey for the rest of eternity.
  • Neverwinter Nights 2 lets you learn the True Names of a few beings and use them to various ends:
    • The devil Mephasm will willingly tell you his True Name, because he's trapped in the mortal world and only someone who knows it can safely banish him back to hell. Later in the game, you can use it as part of a summoning ritual, which lets you trade magical trinkets with him.
    • You can learn the True Name of the Demon Zaxis from a Succubus who wants you to find ways of using Zaxis' True Name to make it suffer. You can then force Zaxis to lend its magical energy to open a portal for you, tell it to stop talking like a Third-Person Person (which fails because Zaxis is too stupid to understand the difference between third- and first-person), or give it to an Erinyes to complete a quest.
    • The True Names of the Shadow Reavers can be found on a scroll which you acquire during the late game. When fighting a Shadow Reaver, you must have one of your companions read the scroll in order to make them vulnerable to damage.
  • In Achaea, the Occultist class has the ability to take a "true name" from a player's corpse. They can later use the true name in a very strong attack against that player.
  • The "No one ever seems to realize this" bit is pointedly averted in the MUCK game SouthernCross, as those taking the flaw 'Bound by Superstition', among other significant quirks, have a True Name. This is so common in the setting's fae cultures, that a deep-set tradition is to either name an afflicted child with a difficult and esoteric name, then give them a new name by which they're addressed normally, or for the afflicted character (if they have one) to see to it that people always call them by the name of their domain (the concept or element many fae-blooded characters embody). 'Course, it's also played straight in that another part of said culture is the intrinsic value placed in knowledge of one's true name, and so just forgetting what your True Name is and having done with it is rather frowned upon.
  • The Elder Scrolls universe states that all Daedra have both a neonymic and a protonymic. The neonymic is their true name that they can change. It holds a certain amount of power, but is hard to use against them because they can change it at any time. However, the protonymic is their true name that they cannot change. It is heavily implied that through use of the protonymic mortals can do horrible things to even the most powerful of Daedric princes. The player character in Battlespire managed to banish Mehrunes Dagon through using them both.
    • Played with in The Elder Scrolls V: Skyrim, where shouting a Dragon's name in Thu'um (dragon language) is viewed as a challenge to that dragon; it will usually seek out whoever made the shout out of curiosity and honor, but is under no compulsion to do so.
    • This is also true for Dragonborn, as the Greybeards summon them to High Hrothgar by calling out their true name via the Thu'um.
  • In the Nintendo 64 Game, Aidyn Chronicles: The First Mage, A massive portion of the quest is for the main character to learn his true name and thus gain the power to defeat the Big Bad
  • In Warcraft universe, knowing a demon's true name gives you some power over it. This is presumably how warlocks control their demon minions, as enslaving a random demon will only allow them to control it for a few minutes and the two warlock minions without an individual name (Doomguard and Infernal) will only stay summoned for a limited time (they used to break free and attack the player, but now they just despawn). One level 60 World of Warcraft quest chain, which was removed in the Cataclysm expansion, culminated in a quest called "You are Rakh'lih, demon", where the demon's True Name was etched into a specially-forged weapon that the player had to create.
  • City of Villains:
    • The game brings us the voodoo-themed Mr. Bocor. At the behest of a contact, the Player Character can attempt to blackmail Mr. Bocor into working with them by threatening to publish his true name. In classic trickster form, though, Mr. Bocor implies Hello, Insert Name Here has the wrong true name.
      Now, what has she sent in this envelope? Ah, of course. How droll. The child has uncovered what she thinks is my true name, and now believes she can blackmail me into telling you what I know.
      Well, maybe I'll tell you, but not because of her.
    • Knowing the true name of the Envoy of Shadows is the only way to get rid of him as he just keeps coming back every time he is killed.
  • In Touhou, the shopkeeper of Kourindou, Rinnosuke, has the power to determine the True Name and purpose of objects, but not how to use them.
    • In Chapter 14 of Curiosities of Lotus Asia, the canon material in which he is encountered, Reimu brings Rinnosuke a bone that is so old the ancient creature it belonged to has no True Name.
  • Your former co-workers in Deus Ex are two difficult cookies to crack if you end up fighting them straight. However, some snooping, hacking, and risky bets will net you their respective killswitches. The results of speaking their "True Names" are... impressive.
  • In the SNES Shadowrun game, a jester spirit challenges you to learn his true name; if you succeed, he tells you how to find the Big Bad, and will assist you during the fight. It's not Nirwanda, it's Laughlyn, and only by threatening the vampire who tells you this with a stake can you get him to tell you the truth.
  • In Dragon Age: Origins, Connor mentions that the Desire demon he unwittingly summoned in a bid to save his poisoned father refuses to tell him its name, since "names hold power".
  • In Star Control 3, you can find an object that contains the true name of the Eternal Ones, a mysterious evil race. If you let the robotic Daktaklakpak learn this true name, they will first essentially orgasm and then self-destruct.
  • In Breath of Fire IV this is used in a particularly brutal fashion by General Yohm to track down King in the Mountain (and eventual Woobie, Destroyer of Worlds) Fou-lu. Fou-lu is a half of a draconic deity that was Split at Birth, but was still so powerful that he became God Emperor of the Vestigial Empire that summoned him; unfortunately for him, this causes a bit of Cursed with Awesome as the mere act of speaking Fou-lu's name creates such ripples in the universe that anyone who is psychically active can use these to track them down like a bloodhound following a scent. Oh, and Yohm is not only sensitive to these vibrations but is also The Dragon to The Emperor who sees the reawakening of the King in the Mountain as an Unwanted Revival and wants Fou-lu dead. Hilarity does not ensue.
    • This even results (at one point in the game) with Fou-lu essentially pulling Speak of the Devil on himself. Unfortunately, at one point he decides (in a fit of despondency) to tell Mami his life story in the form of a historical legend...which involves the use of his name. Things go rapidly to hell from there.
  • Invoked in Metal Gear Ac!d - Hans Davis is not the real name of Solid Snake. However, Snake was manipulated into believing that this is his true name in order to be put under Neoteny's control.
  • In Tales of Symphonia: Dawn of the New World, if Ratatosk were to learn the new Mana tree's real name, he could take it from Martel and control it. Even without the threat of Ratatosk, the tree is so young that no one outside of the cast of the original game can know it yet.
    • Also brought up to a smaller degree in the original game. Sheena says that everyone in Mizuho hides their real name and uses another name and no one besides their family and the chief know it. Although it's just a tradition and nothing magical or significant beyond that.
  • Hanar (jellyfish people) from Mass Effect have "Face names" and "Soul names". They usually refer to themselves as "This One," however. This is just a matter of courtesy, and when asked about it they mention it is rude to use one's soul name with someone they don't know very well. At no point is it suggested that knowledge of the soul name is connected (or is believed to be connected) to some sort of power or control.
  • In Sam And Max: What's New, Beelzebub?, Sam can thwart an illusion created by Peepers by saying his true name. Unfortunately, Sam does not know his true name, and all parts of it wind up being censored by the censorship branch of Hell (turns out it's Dick Peacock.) He can also reveal Girl Stinky's true form by stating her true name... which stops making any iota of sense when the third season completely retcons Girl Stinky's origins.
  • Parodied in the new Shadow Warrior game, where Lo Wang demands to know his demon companion's name because he read about this trope somewhere. When Hoji gives his name, he reacts in shock that Lo Wang could pronounce it and states that he must be one the prophecies spoke of: A gullible idiot who believes everything he hears.
  • The combat-system of Tsukumogami is built around the use of true names. The titular evil spirits are usually immaterial and thus impossible to fight, but by correctly identifying the everyday object they are possessing (figured out through various hints), you can force them to take on a solid form, and either capture or destroy them. (Incidentally, this effectively serves as a subversion of one of the rules stated at the very beginning of this page - their True Names effectively ARE objects.)
  • In Metal Gear Ac!d, the reason Alice saddles Solid Snake with a Jekyll & Hyde evil personality that he occasionally switches into is because her Mind Control Psychic Powers only work on those who have a true name, and Snake (in this continuity) is completely nameless, other than his codename. She used a combination of Gaslighting and drugging to render him suggestible enough to plant a secondary personality - which did have a true name - in his mind, and then attempted to engineer a Split Personality Takeover, after which he would be helpless and she would be able to control him completely. If she hadn't been forced to unveil her plan to Snake and then got herself Hoist By Her Own Petard, she was on track to pulling it off.
  • Chapter 4 of Paper Mario: The Thousand-Year Door features a specter that specializes in copying and stealing his opponents' bodies. The copying presents no issues, but when he steals Mario's body, the two of them are unable to do any harm to each other until Mario learns and speaks his real name, Doopliss, to weaken the spell.

     Web Animation  
  • In one Strong Bad Email episode, Strong Bad reveals that getting Bubs to say his name backwards minus the first 'b' (Sbu) will force him to give you a free lunch special. When he does, however, it's revealed that doing that just makes him lose his superpower- being able to fly. He never used it often because he can only hover a few inches off the ground since he gained weight.

     Web Comics 
  • "True Names" are a heavy theme in Shadowgirls. First, Becka gains the respect of a sea monster by telling it her name. After that monster tells her there is power in names, Becka is then able to summon her full power by saying the real name of the Shadowchild within her.
  • Played with in Goblins. According to a house rule, the pit fiend can be forced to serve any mortal who speaks his true name. Incidentally, his true name is definitely not Richard, Francis, Leslie, Winkypoop the Slippery Monkey, or Walter. It's Grinnorarcen.
  • No doubt will be a huge theme in Namesake especially since one of the characters has "sold their name."
  • Elf Blood's sympathetic magic works best with these. The knowledge of a true name drove the entire Sister, Sister arc.
  • In Sinfest, Satan sneers at Criminy's claim to the book because he doesn't even known its true name.
  • In morphE a mage can have a link to a person by knowing their true names. Amical convinces his seedlings to take on code names and uses his knowledge of their true names as leverage to get them on his side. Even the audience only knows 2 of the 5 seedling's true names.
  • In Sluggy Freelance, the demon Kozoaku gains power whenever somebody says his true name properly. Gwen points out that in that case, maybe people shouldn't be shouting it from every street corner. So the gods magically changed his true name to The Unpronounceable K'Z'K.

     Western Animation  
  • American Dad! had Steve playing an MMORPG where his character dies when someone says his name backwards. His sister Hayley uses this little-known fact to humiliate him in front of his friends, who instantly go from praising him to constantly belittling him. When this happens, Hayley's boyfriend convinces her to go with him on a long quest for an item to revive Steve. After he comes back, he goes to take revenge on his friends for maltreating him, only for them to just say his name backwards the second they see him.
  • Family Guy employed a similar gag when, in a cutaway scene, Adam West writes down Jeopardy! game show host Alex Trebek's name backwards, thus banishing Trebek "back to the fifth dimension where he belongs."
  • Dora the Explorer: "Swiper no swiping!"
  • In Minoriteam, Fasto had to stop a Galactus knock-off from eating the world. So, he threatened him with his real name. The real name was so embarrassing that it worked.
  • In Ben 10: Ultimate Alien, Charmcaster explains that in the Magical Land of Ledgerdomain, to know someone or something's true name is to have power over it. The villain Adwaita has the Alpha Rune, the true name of magic itself, making him an unstoppable Physical God/Reality Warper, at least within Ledgerdomain. At one point, Kevin taunts Charmcaster about how she told him her name was Caroline, but she retorts that "Caroline" is just an alias. Later Charmcaster obtains the Alpha Rune, making her nigh-omnipotent within Ledgerdomain.
    • For the record, Charmcaster's real name is "Hope".
  • In Adventure Time, only Finn, Jake, and Marceline know that the Ice King's real name is Simon. Not even the Ice King himself knows.
  • Inverted in Danny Phantom with Ember, the ghost of a rock star who becomes more powerful for each person cheering her name.

     Real Life  
  • Used in bizarre fashion in the House of Commons, where members are only referred to by one of a variety of titles. Only the Speaker uses the name (always the Full Name) of the members, and explicitly "naming" someone is either an insult, a reprimand, an enormous faux pas, or is calling for them to speak - depending entirely on context.
    • In the United States Senate only the presiding officer may be directly addressed in speeches; other Members must be referred to in the third person. In most cases, senators do not refer to each other by name, but by state, using forms such as "the senior senator from Virginia" or "the junior senator from California." The reason for this:it minimizes the chances of having on display bad tempers.
  • Thanks to the Internet, putting a real name to a screen name or e-mail address can lead to all sorts of unpleasantness coming to light.
    • Unless your name is exceptionally generic such that there are twelve people in your home country alone with your exact combination and spelling of first name and last name ("Robert Smith" in the United States for instance). But if they also have a general location...
    • On MySpace, there is an option you can enable that requires people adding you to know your last name or e-mail address.
    • Encyclopedia Dramatica, for all its moral ambiguity, doesn't allow you to show them your pokemans either. They even have their own article for this trope.
    • General consensus is that the best way to make a troll stop is to call them out by their full name. more thorough retaliation involves phone numbers, addresses, class schedules, friends and relatives, and photos. Collectively these are known as "dox" and to release this information is to known as "dropping dox."
      • Though this is risky business for the namer. Many forums have strict rules against posting the personal information of others to prevent cyber-bullying (this is in fact a common harassment tactic used by trolls). The best way to use this against trolls it to reveal small kernels of information at a time, things that let the troll know that you know who they are, but without fully revealing their identity to others.
  • Whether a type of organism is assigned its own species-level taxonomic name or not can be the deciding factor in whether it is entitled to protection under the Endangered Species Act. The future of the North American red wolf grew far less secure when it was mistakenly suspected to be a hybrid of timber wolf and coyote, hence not necessarily an endangered "species" in its own right.
  • A variety of cultures still believe that names have power, and often people are given a name for daily use in order to keep their "true" name sacred.
    • In certain rural locales in the Philippines, sickly children are believed to be targeted by The Fair Folk, and as such are given a "second baptism" in an attempt to throw the Fae off. This ends up sometimes with a person being known by his legal name in the city and by his second name to his folks who stayed on the farm / island.
    • This is true of some Native American peoples. Some give a child an unpleasant name at birth (to trick envious spirits), and then a more appropriate name later on. The Diné (Navajo) have a true name ('war name')—generally known only to their maternal grandparents, who gave it, and their medicine man—and go by another name for everyday purposes. The Navajo also taboo naming people or pets after dangerous animals, because calling for your dog, 'Bear', is also calling bears to you.
  • In the United States, one's Social Security Number is effectively a True Name. They are designed to be unique, used only when unambiguous identification is necessary, and if someone else gets it they can cause some problems.
    • And in many countries who practice ID cards, the ID card number.
  • The "sovereign citizen"/"freeman on the land" movements hold that as the government and the courts do not use what they say is their True Name, those entities have no authority over their members. (Their True Names are some variant of their legal name, such as "John of the family Smith," "John of Smith" or even "John: Smith.") As the number of "citizens"/"freemen" who have lost legal cases or been jailed attests, they are wrong.
  • If you call someone by their name, they will usually stop for a moment to hear what else you have to say. However, if this power is abused, it will become less effective.
  • Because religious intolerance has and still exists, part of Gerald Gardner's "Old Laws" for Wicca touches upon persecution and the need for secrecy and the usage of names at rites. "And while there, none shall say whence they come, or give their true names."
  • The Confucian doctrine of the "Rectification of Names", which can be summed up in the proverb "The Beginning of Wisdom lies in calling things by their proper names." It's purpose was to prevent Poor Communication Kills, which Confucius believed would snowball into societal collapse if left unchecked. Other sources (this is not the place to decide between interpretations) would have it that it was even closer to the trope in that it actually meant the rectification of things so that they matched their names, because the names had separate metaphysical power and the world would only work if things in it matched them. A ruler not acting as a ruler should was not only acting in ways that didn't work, but this was tied to the fact that he was not realising the essence of rulership properly.
  • In programming, if you know the full name of any object, you can force it do whatever you want that's within its power. What's more, if you know the full name of a class, you can extend it or create a subclass of it to give it the power to do whatever you want, create an object, and - using the full name of the object you've created - force it to do whatever you want that's within the power that you've given it.
    • In part for this reason, its standard practice to make the names of your variables and certain internal functions private, giving other developers access to their internal workings in a controlled fashion through public functions designed for that purpose.
  • Why else do you think mothers everywhere use the Full Name Ultimatum?
  • Military service numbers come under this, particularly as there are usually several cases of Name's the Same.
  • In certain cultures, it's rude to call someone by their given name unless you have some intimate connection to them (family, lovers, etc.), and it's preferred you call them by their family name.

From The Latin Intro DucereWord PowerIn the Name of the Moon
I Have Many NamesOlder Than DirtImmortality Seeker
I Have Many NamesNaming ConventionsIronic Name
Hypno RayApplied PhlebotinumImplausible Synchrony
Functional MagicMagic and PowersLanguage of Magic

alternative title(s): True Name
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