150+ Villain Alias Ideas for Evil & Mysterious Characters

Here are more than 150 villain alias ideas and codenames, sorted into ten kinds: masked identities, mysterious names, criminal aliases, supervillain codenames, fantasy epithets, assassin working names, mastermind titles, technological handles, reputation-based names and symbolic ones. These are the names the world uses for a villain, which is a different job from the name on their birth certificate.

What an alias does that a name cannot

A name says who someone is. An alias says what happened when people met them, and that is a much more useful thing for a story to have.

The practical consequence is that the best aliases sound like phrases, not like names. The Long Firm is a real British term for a fraud where a business builds up credit and then vanishes with the stock. As a villain alias it works because it sounds like something an inspector would say, wearily, to a colleague who already knows the case.

That is the register to aim at. Aliases which sound like a person picked them, especially anything with a dark adjective and a threatening noun, read as costume. Aliases that sound like other people started using them read as history, and history is what makes a villain feel like they existed before chapter one.

One more thing that separates a working alias from a list entry: length. An alias gets repeated more often than a name does, because characters use it instead of the name every single time, so anything longer than about four words needs a short form that people actually say. The reputation-based aliases further down are the exception, since those are designed to appear once or twice in dialogue rather than throughout.

Masked identities

Aliases for a villain whose face nobody has seen. These describe the covering rather than the person, which is exactly how a real description spreads through a frightened neighbourhood.

The Silver Nose comes from the astronomer Tycho Brahe, who wore a metal prosthetic after losing part of his nose in a duel. Borrowing a real detail like that gives an invented villain a texture pure invention rarely reaches.

Mysterious aliases

For the villain whose identity is the question. These are drawn from legal and clerical language, where a person can be referred to precisely and completely anonymously at the same time.

The Party of the Second Part and The Undersigned both come from contract language, where a person is deliberately reduced to a role. Attaching one to a villain suggests they have been carefully removed from every document that could identify them, which is a whole backstory in three words.

Criminal aliases

The names that appear on a file and in a pub. Money vocabulary does most of the work, because in a criminal world almost every relationship is eventually about a percentage.

Worth stealing: Two Doors Down. It is not a description of the villain at all, it is a description of where he lives, which tells you that everyone knows exactly who he is and nobody is going to do anything about it.

Supervillain codenames

Aliases for a costumed antagonist, drawn from the vocabulary of escalation, deterrence and consequence rather than from the usual dark nouns.

For a full comic-book roster sorted by power type, tech, cosmic, masked, mutation and theatrical, the 250+ supervillain names guide holds 253 of them.

Fantasy epithets

The names a world gives a villain when it is too frightened to use the real one. Most of these describe an absence or a debt, which is how oral reputation actually works.

Named characters to attach these to, dark lords, sorcerers, necromancers and corrupt monarchs, are in the 250+ fantasy villain names guide.

Assassin working names

Trade language. An assassin’s alias should sound like a booking, an appointment or a delivery, because that is how the people who hire one prefer to think about it.

Note how few of these sound dangerous. Housecall, The Consultation and Two Weeks are all ordinary service language, and the flatness is the point: an assassin who is spoken about like a plumber tells you something grim about the people doing the hiring.

Mastermind titles

Committee language, which is genuinely more frightening than anything gothic once you notice that it describes how most large harms are actually authorised.

Worth stealing: Any Other Business. It is the last item on every agenda, the point where the things nobody wanted minuted get decided, and it is a perfect name for a villain who operates in the gaps of a legitimate organisation.

Technological handles

Aliases for a villain who lives in a system. These are drawn from operations and security vocabulary, where the words for control are unusually cold.

Two of these carry a threat that lands even if the reader does not know the term. A dead man's switch triggers when the person holding it stops holding it, and persistence is the security word for an intruder who stays after being removed. Both describe a villain who cannot simply be dealt with.

Reputation-based aliases

The most distinctive category and the least used. These are not names at all, they are the phrases people reach for when they will not say the name, and each one implies an incident the reader has not been told about.

These work in dialogue rather than in narration. A character saying "that was the second fire" carries the whole weight, while a narrator introducing someone as The Second Fire sounds like a title card. Use them the way people use them.

Symbolic aliases

Aliases that stand for an idea rather than a person. This is the one category where the villain choosing their own name is defensible, because a symbolic alias is a statement and statements are made deliberately.

Symbolic aliases need the story to earn them. The Broken Window is excellent if a broken window actually appears at the right moment, and slightly embarrassing if it does not, so pick one that connects to a concrete object or event you are already writing.

When your villain should have no alias at all

Worth checking before you pick one, because an unnecessary alias makes a book harder to read rather than richer.

If the villain is known to everyone by their ordinary name, they do not need a second one. A crime boss whose whole power is that he operates openly and nobody can touch him is undercut by a codename, because a codename implies concealment he does not need. The absence of an alias is itself a statement about how untouchable he is.

If your story never puts the two names in the same scene, the alias is doing no work. The value of a second identity comes from the moment somebody connects them, so if that moment does not exist in your outline, either write it or drop the alias and save the reader the bookkeeping.

And if you find yourself using the alias in narration and the real name in dialogue, or the reverse, without a rule, pick one and be consistent. Readers track this more closely than writers expect, and inconsistency reads as a mistake rather than as atmosphere.

Decide who started using it

Before you attach an alias to a character, answer one question: whose mouth did it come out of first? The answer changes what the alias means without changing a letter of it.

If enemies started it, the alias is an insult that stuck, and the villain has probably decided to enjoy it. Baron Umbrage and The Opposition both read that way. If victims and neighbours started it, the alias is a way of avoiding the real name, which tells you the fear came first. If an institution assigned it, from a police file or a case number, then the villain is a known problem that nobody has solved, which is its own kind of horror.

And if the villain chose it themselves, you have said something specific: this is a performer. That is a legitimate character, common in comics and in the theatrical end of crime fiction, but it is a choice rather than a default, and readers will read it as ego whether or not you intended them to.

The most useful trick in this whole page is giving one villain two aliases from two different sources. The police call him something clinical. The street calls him something else. When those two names meet in one scene, a reader understands the scale of the character without a word of explanation.

Where to go next

For power-derived codenames specifically, the power-based villain names guide sorts 167 of them across fifteen abilities with obvious, technical and ironic options for each. For the wider set across every style and role, the 300+ villain name ideas hub is the parent list.

If you are still deciding whether your villain needs an alias at all, that question has a step of its own in the ten step naming method, along with a worked example that runs the whole process on one character.