"You may want to add a few more vowels into your name there, Z."When you take Only One Name to the extreme, this is the result. Most often a Code Name. For some reason letters from the second half of the alphabet are much more likely to be chosen. Even people who change their names to something starting with A to get to the top of an alphabetical list seem to never use just A. A fair number of older novels (from, say, the 19th and early 20th centuries) use this as a form of "discretion shot". (See Spell My Name with a Blank.) For example, a lot of Sherlock Holmes stories refer to "Mr. B——" as a way to imply that this is a real person and the story really happened in the real world, but that due to the potentially embarrassing nature of the events Watson is too much of a gentleman to reveal Mr. B's true identity. Compare You Are Number Six, when the name is a number. Not to Be Confused with One-Letter Title.
— Sebastian Stark, Shark
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Anime and Manga
- A serial killer in Hell Teacher Nube that patterns himself after Aka Manto (Red Mantle) is simply referred to by authorities as "A". It's clear this is an attributed alias, but we never learn his real name.
- Count D and his relatives in Pet Shop of Horrors.
- D, the alien spy from Project A-Ko. It is, however, a code name.
- D from Dual! Parallel Trouble Adventure.
- The title character of Tekkaman Blade is nicknamed D-boy. In the OVA, he has taken to signing his name "D", and Yumi simply calls him that. (It's actually "Dangerous", for doing a lot of reckless things early in the series.)
- The title character of Vampire Hunter D.
- In the English dub of Yu-Gi-Oh! GX, Aster Phoenix's adoptive father is named The D. In the Japanese version, he was called DD, which is a two-letter name, but comes close.
- G, the Big Bad of Real Bout High School, who honestly doesn't remember his name after the years of psychological and physical conditioning he was subjected to since he was a boy in order to become the perfect bodyguard. As far as he's concerned, it's a placeholder; He'll find out what his name is if it's the last thing he does.
- G., the first Vongola Storm Guardian from Katekyo Hitman Reborn!.
- Phantom Thief G? from D.Gray-Man
- Soldat J, from GaoGaiGar
- J from Heat Guy J
- J from Bobobo-bo Bo-bobo. You know, the one with the garlic/onion (the heroes can never decide this) for a head?
- In the Diamond/Pearl saga of the Pokémon anime, a villain known as Pokemon Hunter J and a one-shot filler character known as O were introduced.
- In Pokemon Special, the protagonists of each arc are named after their generation's games. So the protagonists for the XY arc are named... X and Y. Granted, when romanized their names become Ekkusu and Wai, but it still doesn't make their names any less weird. Averted with Y in the Viz version, as her actual name is Yvonne but has 'Y' as her nickname.
- Gravitation's K. (Although his actual name is revealed later.)
- K in Puni Puni Poemi.
- L from Death Note. A handful of other characters use one-letter codenames at some point, as well, (most notably L's successor Near first introduces himself as N) but, as revealed in the "how to read" book, L actually is his first name. The full name being L Lawliet.
- L-sama from Slayers novel afterwords. Though this is an abbreviation of L.O.N. or Lord of Nightmares.
- In Valvrave the Liberator, soldiers trained at the Karlstein Institute have their real names taken, and they are replaced by combining this with You Are Number Six. So we have L-Elf (Elf meaning 11), and several others.
- Y in Humanity Has Declined. Assuming that's her actual name, seeing as no one else has one...
- The main antagonist of the third Tenchi Muyo! OVA goes by Z, remarking that his real name, Z-0001332536893, is too long.
- Mazinger universe: Fanon often refers to the eponymous Humongous Mecha Mazinger Z as simply "Z".
- Z, the Big Bad from the eponymous One Piece movie One Piece Film: Z.
- The Alphabets, Major Eberbach's subordinates in From Eroica with Love, are each known by one single letter as a codename. The Major always seems to have 28 of them around despite having sent some to Alaska. (Also, the letters are pronounced like German alphabets.)
- In Naruto, a lot of people from the Village Hidden in the Clouds: The Raikage is "A", his brother is "B" (though everyone called him "Killer Bee"), he has an aide named "C" and they sent a shinobi after Sasuke, who was called "J", and an incidental character was named "F". In this case, these are code-names/ranks (that may have fully replaced the characters' original names which are never revealed). For example, B is given the name after being chosen as the combat partner for A when he was promoted to head of the village and its armed forces (implying the Raikage is always called "A" and paired with an assistant/bodyguard called "B").
- The Gundam Engineers Doctor J, Professor G, Doktor S, Instructor H, and Master O. The sequel novel Frozen Teardrop has Trowa and Quatre taking similar aliases Doktor T and Instructor W, as well as revealing Doctor J's real name: Jay Nul
- [C] - Control (itself a One-Letter Title) has an Asset going by the name Q. Also, a chain reaction that impacts the global economy when a Financial District goes bankrupt is simply known as C.
- Ixpellia from Striker S Sound Stage X, whose nickname of Ix/Ikusu is transcribed in English as "X" in the CD booklet.
Films — Animated
Films — Live-Action
- F, the voiceless vampire girl in Marebito.
- G, of the movie Holy Man (played by Eddie Murphy) - the titular character, in this case.
- In Envy, Christopher Walken's hobo character calls himself "the J-Man."
- The film The League of Extraordinary Gentlemen has M, who is the one who gathers the League and gives them their task. Of course, it turns out that M stands for Moriarty.
- V for Vendetta: "Voilŕ! In view, a humble vaudevillian veteran, cast vicariously as both victim and villain by the vicissitudes of fate. This visage, no mere veneer of vanity, is a vestige of the vox populi, now vacant, vanished. However, this valorous visitation of a bygone vexation stands vivified, and has vowed to vanquish these venal and virulent vermin vanguarding vice and vouchsafing the violently vicious and voracious violation of volition! The only verdict is vengeance; a vendetta held as a votive, not in vain, for the value and veracity of such shall one day vindicate the vigilant and the virtuous. Verily, this vichyssoise of verbiage veers most verbose, so let me simply add that it's my very good honour to meet you and you may call me V."
- Willem Dafoe's character in New Rose Hotel is known only as X.
- X, leader of the alien invaders in Godzilla Final Wars. He says it's just a nickname for the humans to call him because his real name is too hard for humans to say.
- X is one of the men going to the Million Man March in Get on the Bus. Flip doesn't believe it's his real name, and it isn't — it's short for Xavier, but he's always preferred "X".
- Z (pronounced Zed) from (and short for) Zardoz.
- Men In Black agents, including Agents J, K, L, and Zednote , along with almost everyone else with the organization. The third movie adds an "AA", but it's only in a Bad Future anyway. Interestingly, the names appear to be based on the first letter of the first name (James, Kevin, Laura, Michael). This begs the question - are there only 26 agents in the MIB? What happens when two agents have their first names start on the same letter?
The animated series also has Alpha, one of the founding members of MIB and K's mentor, before he went rogue. When he first meets J, he introduces himself as agent A. When J later mentions A to K and Zed, Zed points out that there is no agent A.
- The James Bond films famously have several of these.
Bond: I had no idea it stood for-M: Utter one more syllable and I'll have you killed.
- Bond's boss M, based on the Real Life head of Mi6, who goes by the codename "C". It's mentioned in Casino Royale (2006) that M is not just a random letter (whether it references a name - the novels have the original Miles Messervy and Barbara Mawdsley, a prop in Skyfall has the name Olivia Mansfield - is unclear):
- Gadgeteer Q ("Q" being short for "Quartermaster"/"Quartermaster's department", referencing his job to supply agents).
- Q's assistant, dubbed as R ("reserve"), before he gets promoted to Q.
- In The Bourne Series, Jason Bourne went by the military-alphabet name Delta when he was in the Medusa program in Vietnam.
- General G in the novel From Russia with Love. Probably at least partly because of his long freakin' name, Grubozaboyschikov.
- Older than Television: The protagonist of ''The Castle' by Franz Kafka is known only as K.
- The protagonist of Franz Kafka's The Trial is named Joseph K.
- In Sputnik Sweetheart, the narrator is only ever known by the letter K.
- In the Japanese novel Kokoro, Sensei writes a long testament about his relationship with his dead friend, whom he only refers to as "K."
- As the title probably suggests, the heroine of the erotic classic The Story of O is known only by her initial.
- S (aka "The Stooge"), the protagonist of Paul Pope's sci-fi graphic novel, Heavy Liquid.
- V from Vegan Virgin Valentine. Her full name is Vivienne Vail Valentine, so you can see why she shortens it.
- To Kill a Mockingbird has a bit character called X Billups. Most people didn't believe that was his full name until he was asked to spell it during a court case.
- John Hackworth's nemesis Dr. X in The Diamond Age. (A slight subversion in that his actual name is quite long, but it is very hard to pronounce, so everyone just calls him Dr. X. Interestingly, his Chinese name is written with only one character as well.)
- 6 and @ from Max Berry's book Syrup. When 6 was born, her parents named her 0 (zero), then on her first birthday, she was renamed 1, up until they were killed when she was, yup, six years old. The name stuck. As for @, well, it's not explained, but 6 says she only did it to copy her.
- In The Twenty-One Balloons by William Pčne du Bois, the island of Krakatoa is settled by twenty families, who take on the letters A through T as names (e.g., the man who founded the island is only known as Mr. M, his wife is Mrs. M, and their children are M-1 and M-2). When the protagonist is stranded there, he asks if they would like to start referring to him as Mr. U; they decline, as it would lead to pronoun confusion. No mention is made of how they manage to non-confusingly talk about the I family, though at least I is only a pronoun in the subjective case.
- Members of the Audubon Ballroom in Honor Harrington use X as a surname, though most have a different legal name.
- As an extension of this, freed slave and noted academic Web Du Havel's full name is W. E. B. Du Havel. He didn't understand how names work when he needed to provide one for the record, so W. E. B. doesn't actually stand for anything.
- The Aann, a reptilian race from the Humanx Commonwealth novels, use a string of capital letters in place of a surname. As they advance in rank within their society, letters are removed from these strings, meaning that the Emperor of their kind has a one-letter surname.
- E.E. "Doc" Smith and Stephen Goldin's Family D'Alembert series has two major villains: Lady A, and someone (or something) called C. However, there is no B in the hierarchy (nor D through Z for that matter) and C is actually the boss. Why this is so is only revealed when it's almost too late to save the situation.
- J. Eugene Raxford in Donald E. Westlake's The Spy in the Ointment, due to not being given real names by the FBI agents he's forced to deal with, mentally refers to them as Agent A, B, etc.
Live Action TV
- A, the main antagonist of Pretty Little Liars.
- Mister F from Arrested Development. It turns out to be a subversion. MRF actually stands for Mentally Retarded Female.
- G Callen from NCIS: Los Angeles (his first name accidentally vanished when he was put into foster care). When they finally track it down, the building explodes before Callen can open the drawer.
- Horatio Caine, usually just H, from CSI: Miami.
- Played for laughs in Herman's Head. Jay goes to a Sex Addicts Anonymous meeting and to maintain his confidentiality declares he will introduce himself by the first letter of his name.
- Mr. K from Go On. It may or may not be short for something, but given his odd mental state, it's probably not worth asking.
- Q from Star Trek. Since it's used for both the character and the species to which he belongs, things can get confusing when other Qs show up. (Though it's less so in print: the second Q from "Deja Q" is rendered as Q2, and Q's son is q.) An Expanded Universe trilogy adds another god-like being named 0. That's right, a One Digit Name. There's also <*> (that energy cloud from TOS causing humans and Klingons to fight), a One Asterisk Name.
- Mr. X, Mulder's second Mysterious Informant from The X-Files.
- Lord Zedd from Power Rangers. His Mooks had this letter on their breastplates.
- One episode of Shark involved a fashion designer named Z Pruitt. He was much ridiculed.
- Doctor Who has a villain named Omega.
- In "The Happiness Patrol", the natives of Terra Alpha all have one-letter surnames denoting social rank. Offworlders have their surname replaced by 'Sigma'.
- The Doctor himself has been known to sign his name as simply "?".
- Get Smart: When Max and the Chief swap roles due to a bureaucratic foulup, the Chief goes back to his old designation of Agent Q (he joined CONTROL before they switched to numbers).
- On Dollhouse, all the actives in the LA house are apparently assigned a letter, but are referred to as the military phonetic code for said letter (Alpha, Echo, November, Sierra, Whiskey, etc). How they deal with having more than 26 actives is never addressed; quite possibly they just don't ever have that many.
- The alternative rock band A, though they were originally called Grand Designs.
- E from the band Eels, who used to also make solo albums under that name, until he decided it made his music too hard to track down. He has gone by his real name though - his autobiography Things The Grandchildren Should Know and the soundtrack to the film Levity are both credited to Mark Oliver Everett. He initially started being called E in high school because he just knew too many other people named Mark.
- Ian "H" Watkins of Steps.."
- L from Infinite.
- M, the new-wave band most famous for "Pop Muzik".
- N from VIXX.
- V from BTS.
- Hello! Project former group W. Quite tricky to search for their material, if it wasn't for one of their alternate names, Double You.
- If plurals of a single letter count, short-lived Christian swing/ska band The W's.
- Y is AOA drummer Youkyung's "angel name"note but like the other members' angel names it's stopped being used for the most part.
- In Vivian Stanshall's comedy LP Sir Henry at Ndidi's Kraal, the eponymous Sir Henry Rawlinson mounts an expedition to Africa, the "dark incontinent". He can't remember his native bearers' names, so "to their - ahem - cheery delight, I numbered the sods. The last twenty-seven I named after the letters of our alphabet. The twenty-seventh - knew you were going to ask me that! - was a question mark.
- A from Digimon: Digital Card Battle. It's a pseudonym.
- D in Another Code: Two Memories (a.k.a. Trace Memory''). D turns out to have been a nickname. His real name is Daniel.
- D is the default name of the main character in Crystal Story II.
- The second character David meets during the events of The Crooked Man calls himself D. He refuses to give out his full name.
- D from Grand Theft Auto V.
- At one point during Vampire: The Masquerade – Bloodlines, you run into a thin-blood named E, who asks you to find out about thin-bloods and rescue his girlfriend and sire, Lily. The Malkavian run lampshades this at one point, referring to him in conversation with Lily as "the letter that comes before F and G".
- G from The House of the Dead, who, despite being the only one with such a unique name, is pretty ordinary for a secret agent. It becomes a Running Gag in The House of the Dead: OVERKILL, where G constantly refuses to answer what the letter means whenever people ask him.
- G from Bust-A-Move 4. He's an old wizard, but he acts like a senile old coot to throw people off.
- H, an otherwise unremarkable mook from the video game Fighting Force. Also features an Agent X toward the end.
- Double H from Beyond Good & Evil, though this is just a codename, his real name is Hubb
- J from Final Fight.
- Julius Belmont from Castlevania: Aria of Sorrow refers to himself as J until he regains his memory.
- The main playable character of Elite Beat Agents is known as Agent J.
- K from Virtue's Last Reward, the sequel to Nine Hours, Nine Persons, Nine Doors. Technically Phi and Sigma too, although their names are spelled out in English. K is a placeholder variable in math, hinting at his switch with Akane in the true timeline and Sigma's name references his ability to remember memories from multiple timelines.
- K′ from The King of Fighters (the apostrophe-like symbol, pronounced "dash" or "prime", is the mathematical notation for derivatives, a hint of his origin as a genetically altered clone of Kyo Kusanagi).
- Mr. L from Super Paper Mario, though that's not his real name. He's Luigi, much to the surprise of no one.
- Inverted in the PC game N: most people think the main character ninja's name is N, but actually the ninja is nameless and N represents "the way of the ninja", a system of beliefs to which the ninja subscribes. These details are found on N's "Story" page.
- N from Pokémon Black and White. (The Japanese games actually use the English letter as his name, a rarity in a JRPG). It's short for Natural, as in natural number, so it makes sense.
- O is the name of a minor NPC in Planescape: Torment. He's not just any old O, but part of the "divine alphabet." Whatever that means, he can give you a permanent boost to your Wisdom if you ask the right questions, before vanishing.
- Dr. O from the "Old World Blues" DLC for Fallout: New Vegas. Only not really - while everyone calls him O, his actual name is 0.
- Q from Street Fighter III 3rd Strike.
- Mr. X, the Big Bad of Mega Man 6. He turns out to be Dr. Wily, to the surprise of no one.
- Z, late-game mooks with Wolverine Claws in Captain Commando.
- 3 from 3 in Three (though she's an anthropomorphisation of the actual ASCII character "3", so this is as much a job description as it is a name).
- Mr. X and Robot Y from the Streets of Rage games.
- Many of the main characters from the Mega Man X series:
- The main character, X. Technically a shortening of Megaman X, but no one ever calls him that in series.
- Technically, Zero is a one-number name (0).
- Sigma (∑) is also one letter name, but with a Greek letter. His name is actually written with the Greek letter, and is the symbol on the health bars of anyone associated with his organization in later games.
- And Omega (Ω.)
- R from Mega Man X: Command Mission.
- And Epsilon (E), the game's villain.
- The Biometals in Mega Man ZX are all named "Model [Single Letter]."
- The letters are derived from the names of the guardian the biometal is based on. So Model P for the ninja Phantom and Model X for... well... X.
- Resident Evil 2:
- The mutant form of William Birkin is officially called "G", but most players simply refer to him by his real name.
- The Tyrant from the same game was also given the nickname of "Mr. X" in the American version.
- ?, the character of neu from Popn Music. There is also a ∑ in a different song.
- Elzandra Ayla Umbria, AKA Alexandra Underwood of A Magical Roommate, prefers to be addressed as X. Nobody's sure why. Maybe it has to do with the fact that she rarely says a word with more than three syllables in it, and Alexandra has four.
- Girl Genius has a minor character named Zami Yahya Ahmad ibn Suliman al-Sinhaji, who asks to be called "Z".
- The Irregular Webcomic! "Espionage" theme (a spoof of James Bond) has characters named Ń and Ü. Apparently turnover was so high that they ran out of ordinary letters.
- Coach Z, from Homestar Runner. Didn't start out this way, as his name was spelled "Coach Zee" in the original book of Where My Hat Is At?, presumably to prevent his name from being pronounced "Coach Zed".
- In answering an email from Canada, Strong Bad reasons that Coach Z would be called "Coach Zed" there and decides to call him that in the future (Although he doesn't).
- Happens frequently in Twitch Plays Pokémon, especially with the letter A.
- One notable character specific to TPP with a different letter is "d", the protagonist of Twitch Plays Pokémon X, also known as "Li'l d".
- B from Total Drama Revenge Of The Island. It turns out it's short for Beverly.
- Substitute teacher Mr. E in Recess. Helps his Badass mystique that gets him to cow the rest of the class into doing what he wants (in a good way!)... Except for the resident idealist T.J. (Theodore Jasper, in case you were wondering. He's not an example of this trope, he just uses it as a better-sounding nickname. Can you blame him?) They find common ground in the end anyway.
T.J.: So, can I ask what the E stands for?Mr. E: No.T.J.: You are so cool.
- In one episode of The Simpsons, Homer decides to find out what his middle initial J stands for. It turns out, it stands for Jay.
- Invader Zim plays with this, and has a character named "The Letter M".
- N the Eliatrope from Wakfu: Les Gardiens and Dofus.
- O is also one of the racers in the Oban cycle of Ōban Star-Racers
- "X Agent" from Sheep in the Big City. The trope was parodied in his first appearance:
General Specific: I don't want an "X Agent"! I want a current agent!Private Public: The "X" is put in to indicate mysteriousness rather than his job status sir.General Specific: Well why can't he choose another letter? Like "K"?Private Public: "K" isn't as mysterious a letter as "X", sir.General Specific: What about "L"? "L" is prety mysterious! [waving fingers] Llllllllllllll... Lllllllll!!!Narrator: So as General Specific re-acquaints himself with the alphabet...
- X, later know as Rampage, from Beast Wars.
- X Racer, (named after his uncle's codename), from Speed Racer: The Next Generation.
- Z from All Grown Up!. Chas tries asking what it's short for, but he says "It's just Z."
- The Zeta Project has Infiltration Unit Zeta. His companion Ro calls him Zee, and sometimes he uses "Zee Smith" as an alias while pretending to be human.
- The head of Britain's Secret Intelligence Service (a.k.a. MI6) is always codenamed "C".
- As Al Franken points out while talking about the Downing Street Memos in The Truth (with jokes), there are a number of other individuals in British government given single letter codenames. He mentions a meeting involving "C, Z, R, and a group called 'the vowels'."
- In botanical publications, Carl von Linné (aka Carolus Linnaeus, the father of modern botanical nomenclature) usually gets his name abbreviated to just "L."
- The artist formerly known as "The Artist Formerly Known as Prince" had, during the time when he was known by the quoted name, an unpronounceable symbol as his name. Said symbol, while not a alphabetical letter, still had to be printed during this time, and Warner Brothers had to send out floppy disks of a special font that included the symbol so that print media could print it.
- There are several one-letter geographic names, including:
- D, "the world's shortest" river in Oregon.
- E, a township in Maine.
- Ĺ, Nordic for "brook", a dozen places in Scandinavia. There are also 249 Norwegians with this as a surname, spelled "Aa". It's pronounced "awe", by the way.
- Y, a commune in northern France; amusingly, "y" is French for "there.". Also a "census-designated place" of the same name in Alaska. And a short river in Siberia.
- Mount E, a volcano in Northern Japan.
- A writer for Wired magazine named his daughter "E" with the intent of letting her choose her own name later on. She decided to stay as "E".
- He then did a complete 180 and gave his son a name that wouldn't fit in a single row of text on this page.
- ? of the band ? and the Mysterions, although ?'s namenote is normally rendered as "Question Mark" in interviews.
- Harry Truman's name is in full "Harry S. Truman". Besides having the name "Harry"—usually a nickname for Henry or Harold—as his actual first name,note the "S" famously doesn't stand for anything. His middle name was really just "S.". This was apparently an old Scots-Irish tradition, revived by Truman's family because they couldn't decide if they wanted his middle name was to be "Solomon" (after his maternal grandfather Solomon Young) or "Shipp" (after his paternal grandfather Anderson Shipp Truman). However, the Urban Legend that his name was "S" without a period is false—he almost always spelled his middle name with a period, despite it not standing for anything—the legend comes from a joke that the famously folksy Truman once told the press.
- Ulysses S. Grant is in the boat as well, though his name came about due to a clerical error when he enrolled at West Point: his birth name was Hiram Ulysses Grant, which rather unfortunately abbreviated to "H.U.G."—not exactly the kind of nickname you want either on the frontier (he grew up in the then-relatively backwoods area east of Cincinnati) or at a military academy, which is why he wasn't in any hurry to correct the Academy administration when it messed up his name. Later, Grant did take on the nickname "Sam".
- H Ty Warner, the founder of Ty Inc. (creators of Beanie Babies and various other plush toys). He added the "H" as an affectation.
- Johnny Cash's birth name was J. R. Cash because his parents could not think of a good name at the time. He later changed it to John R. Cash (the middle initial still didn't stand for anything).
- An unusual variant (even for this list) is journalist Jennifer 8. Lee. Yes, her middle name is the number 8. Apparently, she chose it as a teenager as she wasn't given a middle name at birth. On legal documents, it's spelled out "eight" when numbers aren't allowed.
- Actress S. Epatha Merkerson (best known as Anita Van Buren in Law & Order) legally changed her first name from "Sharon" to "S".
Examples of One-Letter Surnames:
- Vanilla H from Galaxy Angel.
- In Real Life, O is a genuine Belgian surname. It also shows up in Hispanic countries, with some people called "de la O".
- Mr. T pities the fools who haven't added him to this list. He legally changed his name from Lawrence Tureaud so people would have to call him Mister.
- Louis V. from Love Is in the Bag. Subverted, it's "Vee".
- Malcolm X
- Y (or I, or Yi) is the second most common family name in Korea, shared by about 20% of the population. Pronounced "ee". In much of the West, however, they take up the more traditional "Lee" (or "Rhee", or... okay, forget it) just to make things less confusing (it matches up better with the Chinese pronunciations for the same character, and it is not incorrect: the traditional spelling is in fact "Ri", a pronunciation still retained in much of the north).
- So, in a moment of great drama, if you wanted to have an epic Say My Name moment with a person by this surname, you could literally shout out "Riiiiiiiiiiiiii!"
- The Korean surname Lee/I would use two letters, but one character. The majority of Korean surnames are one character, but made up of 2-3 letters. It is impossible for any words to be one letter in Korean.
- A valid Korean name is A O. A double dose of One Letter Name!