A brief history of disguise, spirits, and becoming someone else on Halloween.
Before Halloween became plastic fangs, candy bowls and costumes ordered online, the end of October already belonged to transformation.
Not transformation in the modern sense of dressing up.
Something stranger.
For centuries, this point in the year has been imagined as a threshold: summer giving way to winter, harvest giving way to scarcity, light surrendering to darkness.
And eventually, people began crossing that threshold disguised.
But to understand why, we have to go back to Samhain.
SAMHAIN: THE BEGINNING OF THE DARK HALF
Samhain—traditionally associated with November 1 and its preceding evening—marked the beginning of winter in early medieval Ireland.
The agricultural year was closing. Harvesting was largely finished. Herding, warfare and travel entered a different season. Communities gathered for important assemblies and feasts.
But in Irish literature, Samhain was also dangerous.
Stories repeatedly place extraordinary events on this night. Supernatural beings become unusually active. Boundaries are crossed. Humans encounter beings who do not quite belong to the human world.
Historian Ronald Hutton describes Samhain as one of the major seasonal divisions of early Ireland, while later scholarship emphasizes something particularly important: the surviving medieval sources do not simply describe a “festival of the dead.”
They describe something less tidy.
A moment when the ordinary rules of the world seemed less reliable.
That distinction matters.
Because Halloween wasn't born from one single ritual preserved unchanged for two thousand years. What we celebrate now is a strange accumulation of Celtic seasonal customs, medieval Christianity, folklore, migration, guising, games, superstition and eventually mass culture.
Historian Nicholas Rogers describes modern Halloween precisely as this kind of layered evolution, combining Celtic and Christian traditions rather than descending neatly from one ancient ceremony.
WHEN THE OTHERWORLD CAME CLOSER
Later Irish folklore preserves an idea that feels remarkably familiar:
Halloween was a night when the dead might return.
The National Museum of Ireland records traditions in which deceased relatives were expected to visit the family home, while dangerous spirits were also believed to wander outside. People might avoid travelling alone. Protective crosses could be placed above doors. Food, games, divination and remembrance all became part of the night.
The border between hospitality and protection becomes fascinating here.
You welcomed some visitors.
You protected yourself from others.
And somewhere inside that contradiction, the mask appears.
WHY BECOME THE THING YOU FEAR?
Later Halloween traditions in Ireland and Scotland include guising: people—often children or groups of young men—went from house to house disguised, masked or otherwise transformed.
The National Museum of Ireland records ghostly masks being made to frighten neighbours and disguised groups travelling from house to house to entertain. Irish museum material also documents masks fashioned from fabric and natural materials.
Some folklore interprets disguise as protection.
If uncanny beings were walking among humans, one response was essentially to become uncanny yourself.
Not necessarily:
I am pretending to be a monster.
But:
For tonight, you cannot tell what I am.
There is an almost animal logic to it.
Camouflage.
Mimicry.
Passing unnoticed by becoming indistinguishable from the danger around you.
Accounts of Scottish traditions describe people blackening their faces or wearing masks while impersonating the dead; later interpretations connect this to disguising oneself from harmful supernatural beings.
And this is where the history begins to resemble something almost psychological.
You protect yourself from the frightening thing by temporarily becoming it.
THE MASK DOES SOMETHING TO THE PERSON WEARING IT
A mask hides you.
But it also permits you to become someone else.
Anthropologically, masking appears across wildly different cultures for exactly this reason. Masks can obscure identity, but they can also create another one: ancestor, animal, spirit, demon, god, fool.
The wearer occupies an unstable position.
Human underneath.
Something else outside.
And Halloween inherited something of that instability.
Later guising and mumming traditions weren't simply about looking frightening. Disguise allowed people to enter houses, perform, demand food, make jokes, cause mischief and temporarily behave outside ordinary social expectations.
The history of Scottish guising, in particular, overlaps with older winter performance traditions in which disguise and theatricality temporarily rearranged normal identity and social behaviour.
For one night, you weren't entirely yourself.
That might be the most enduring part of Halloween.
FROM SPIRITS TO STRANGERS AT THE DOOR
Christian traditions gradually became entangled with these older seasonal customs.
November 1 became All Saints' Day; November 2, All Souls' Day. The evening preceding All Saints became All Hallows' Eve—eventually, Halloween.
Meanwhile, medieval traditions such as souling developed, in which poorer people went from house to house receiving food in exchange for prayers for the dead.
In Ireland and Scotland, guising developed its own forms: disguised visitors might sing, recite poetry, perform tricks or otherwise entertain a household in exchange for food or treats.
Notice how much of modern Halloween is already there.
A stranger approaches your house.
Their identity is concealed.
They perform.
You give them food.
They leave.
The supernatural transaction has gradually become a social one.
And eventually:
Trick or treat.
THE COSTUME SURVIVED. THE FEAR DIDN'T.
Irish and Scottish immigrants carried Halloween customs into North America during the nineteenth century.
By the early twentieth century, Halloween was becoming increasingly secular and communal. By the 1920s and 1930s, versions of trick-or-treating were appearing in North America; after the Second World War, the practice expanded dramatically alongside suburbanization and the availability of commercially packaged candy.
Something extraordinary had happened.
The disguise remained.
The supernatural necessity disappeared.
We still became witches, ghosts, skeletons, demons and monsters.
But now we did it for fun.
The thing that may once have protected you from the strange became entertainment.
And perhaps that explains why Halloween costumes still feel fundamentally different from ordinary clothing.
They aren't merely decorative.
They give permission.
Permission to exaggerate.
To become grotesque.
To become beautiful.
To become frightening.
To become anonymous.
To become someone you normally aren't.
HALF-HUMAN, HALF-MYTH
There is something ancient in the pleasure of becoming unrecognizable.
You cover your face.
Alter your silhouette.
Wear objects you wouldn't normally wear.
Become witch, ghost, beast, saint, corpse, vampire, creature.
And for a few hours, your everyday identity loosens.
Maybe that's why Halloween has survived every transformation made to it.
Samhain became entangled with Hallowtide.
Guisers became trick-or-treaters.
Offerings became candy.
Homemade disguises became costumes.
The dangerous night became a party.
But the central gesture remained strangely recognizable:
we become something else.
For centuries, humans have used adornment to cross that boundary. Masks conceal one identity while creating another. Jewellery, clothing, paint, veils, bones, metal, feathers and symbols turn the ordinary body into something charged with meaning.
Perhaps that is what we're still doing every October.
Not recreating some perfectly preserved ancient ritual.
Something much more human than that.
Playing with the oldest question a disguise allows us to ask:
Who could I become if, for one night, nobody needed to recognize me?
Half-human, half-myth.
And somewhere between the two, Halloween still lives.