Fact Check

The Truth About Slenderman

In 2014, two 12-year-old girls arrested for stabbing a schoolmate in Waukesha, Wisconsin told police they did it to appease a towering supernatural being with tentacles for arms named "Slenderman."

Published Jan. 20, 2017

 (Wikimedia Commons)
Image Via Wikimedia Commons
There is a faceless, semi-human monster called Slenderman who stands eight feet tall, has tentacles for arms, stalks and eats small children, and communicates telepathically with his human servants, called "proxies."


On 31 May 2014, three 12-year-old girls embarked on a "birdwatching" expedition in a wooded area near their homes in Waukesha, Wisconsin that ended in one of them being stabbed 19 times and left for dead. Seriously injured, the victim managed to crawl to a nearby road, where she was found and taken to a hospital. She told police her friends had attacked her.

The other two girls were arrested and charged with attempted first-degree intentional homicide. The attack weapon was found among their belongings. They admitted to planning and executing the crime. Under interrogation, they claimed they did it to appease a supernatural being called Slenderman (aka Slender Man), who was described in a Newsweek article as "an evil character who lives only on the Internet," but in whom the accused attackers said they fervently believed:

According to the criminal complaint obtained by Newsweek, Morgan Geyser and Anissa Weier, both 12, discovered Slender Man on Creepypasta Wiki, a website dedicated to Internet horror stories (its tagline: “Proudly hosting 12,151 of your worst nightmares since 2010”). They believed he was real. In early 2014, Geyser and Weier decided to become what they called “proxies” of Slender Man, thereby proving their dedication to him and his existence to skeptics. To do so, they’d have to kill someone.

Although months in the planning, their mission did not succeed. The victim, Payton Leutner, recovered, though she still lives in fear for her life, her mother says. The accused were tried as adults and pleaded guilty to the attack but argued in court they weren't responsible for their actions due to mental illness. In December 2017, Weier was sentenced to 25 years in a psychiatric institution. Geyser has yet to face sentencing.

'Dark and wicked things'

The incident was cast as a cautionary tale for parents by Waukesha police chief Rus­sell Jack, who cited it as a consequence of allowing children unsupervised access to the Internet:

Keeping children safe is more challenging than in years past. The Internet has changed the way we live. It is full of information and wonderful sites that teach and entertain. The Internet can also be full of dark and wicked things.

But although it's true there are "dark and wicked things" to be found on the Internet (as in life, generally), and children's use of the Internet ought indeed to be supervised, to suggest that the Slenderman materials viewed by the accused are "wicked," in any deeper sense than, say, a Stephen King novel is "wicked," is to misunderstand them. The Slenderman "mythos," as the accumulated stories, images, and commentary related to the character have come to be called, is a blend of fiction and folklore. It's a crowd-sourced horror story that hearkens back to boogeyman tales of old.

Origin of a monster

The first time the name "Slender Man" appeared anywhere in print or on screen was on the entertainment web site SomethingAwful.com on 10 June 2009. Someone started a thread in a discussion forum, essentially a Photoshop contest, entitled "Create Paranormal Images." Among the early entries was one posted under the pseudonym "Victor Surge" (later identified as member Eric Knudsen), consisting of an old photograph manipulated to depict a tall, faceless human-like figure with tentacle-like arms lurking in the shadows near a children's playground:

Slender Man
One of two recovered photographs from the Stirling City Library blaze. Notable for being taken the day which fourteen children vanished and for what is referred to as "The Slender Man". Deformities cited as film defects by officials. Fire at library occurred one week later. Actual photograph confiscated as evidence.

1986, photographer: Mary Thomas, missing since June 13th, 1986.

The effect was understated, yet creepy. Inspired by the example, others contributed photos and backstory expanding on Surge's themes, and piecemeal construction of the Slenderman mythos, a collaborative project from the start, was underway. As Surge himself suggested, it was also, from the start, a patchwork of cultural influences:

Where did you get the source for Slender Man? Or was he done from a scratch?

The Slender Man as an idea was made-up off the top of my head, although the concept is based on a number of things that scare me. The name I thought up on the fly when I wrote that first bit. The asset I used for a couple of the pictures was the creepy tall guy from Phantasm, which sadly I have not seen, and the others various guys in suits. All of the things that aren't the torso and legs, like the tentacles and Slender Man's face, were painted from scratch however.

The mythos

By the time middle-schoolers Morgan Geyser and Anissa Weier encountered the Slenderman character years later, the mythos had grown considerably and was being archived on fan sites like Creepypasta Wiki (creepypasta" being an Internet slang term for user-created horror stories and images). It's where, for example, the girls would have read that Slenderman uses fear to control people's minds, and then kills them:

He is described as wearing a black suit strikingly similar to the visage of the notorious Men In Black, and as the name suggests, appears very thin and able to stretch his limbs and torso to inhuman lengths in order to induce fear and ensnare his prey. Once his arms are outstretched, his victims are put into something of a hypnotized state, where they are utterly helpless to stop themselves from walking into them.

He is also able to create tendrils from his fingers and back that he uses to walk on in a similar fashion to Doctor Octopus. The superhuman stretching ability could also be seen as a similarity between himself and Mr. Fantastic.

Whether he absorbs, kills, or merely takes his victims to an undisclosed location or dimension is also unknown as there are never any bodies or evidence left behind in his wake to deduce a definite conclusion.

It's also where they would have learned what a Slenderman "proxy" is:

Proxy (plural: Proxies) is the term given to those who serve The Slender Man. The theory behind the name is that Proxies are entities or people who are under the influence or control of the Slender Man (or the same force that influences Slender Man), and act based on its wants and needs — hence, Proxies serve as an in-between (i.e. a proxy) for Slender Man.

And it's where they would have been introduced to "evidence" that Slenderman sightings date back to the 16th-century in Germany, where woodcuts documenting reports of a murderous so-called "Tall Man" (Der Großmann) with a spear-like arm and superfluous legs were allegedly found:

Der Grossman
Der Grossman

According to legend, he was a fairy who lived in the Black Forest. Bad children who crept into the woods at night would be relentlessly chased by Der Großmann, who wouldn't leave them be until he either caught them or they were forced to tell their parents of their wrongdoing.

Like other items purporting to constitute visual proof of Slenderman's existence, however, the woodcut is merely a doctored version of a Hans Holbein print (circa 1497, below right) depicting a knight in armor "pierced by Death's lance":

Der Ritter -  Is this Slenderman?

Is folklore dangerous?

It's hard not to admire the creativity that went into Slenderman. It's equally hard — at least, from our point of view — to subscribe to the view that it was done for a malevolent purpose or represents a "dark and wicked" side of the Internet. It's more accurate to characterize it as an ad hoc communal art project, or, if you're a folklorist and your bailiwick includes studying the spontaneous generation of stories, an updated, Internet-savvy instance of the age-old process of legend creation.

American folklorist Andrea Kitta expressed just this view in a January 2017 interview with the web site inews.co.uk:

The internet is certainly helping to spread modern urban myths wider and faster than before. Kitta argues, however, that they are more or less exactly like traditional folklore.

“The only difference in some cases is that people may include a picture with the story, which adds to its believability.

“But all of these forms of folklore share many similarities. They tend to be set in the local or historic past, they are believable, and they contain variation.”

Folklorists see such tales as imbued with deeper social meanings. Shira Chess, author of Folklore, Horror Stories and the Slender Man (2014), explored these in comments to The Washington Post:

“We tell ourselves stories because we (humans) are storytelling animals,” she wrote in an e-mail. “And, to that end, horror stories take on a specific significance and importance because they function metaphorically — the horror stories that are the best are often metaphors for other issues that affect our lives on both cultural and personal levels.”

Slender Man, Chess says, is a metaphor for “helplessness, power differentials, and anonymous forces.” He’s an infinitely morphable stand-in for things we can neither understand nor control, universal fears that can drive people to great lengths — even, it would appear, very scary, cold-blooded lengths.

Chess seems to be saying it's the feeling of helplessness and fear underlying them, not horror stories themselves, that can drive people to "cold-blooded lengths." Andrea Kitta isn't so sure:

Kitta believes that urban legends are sometimes wrongly blamed for shocking events. However, she also suggests it is possible they can exert an influence too.

“Sometimes people use folklore as a scapegoat, perhaps most famously in the Satanic Panic of the 1980s.

“But we would be remiss to assume that folklore is safe or benign.”

We're not in a position to judge to what extent, if any, the Slenderman materials viewed by Payton Leutner's accused attackers may have "exerted an influence" on their behavior. We would point out, however, that reports of such incidents have been very few and far between since the character was created in 2009. Perhaps, as Kitta says, folklore isn't always benign, but we should be wary when it's blamed for the bad things people do.


Butler, Mark.   "Slender Man: How a Modern Urban Legend Came to Haunt a Generation." inews.co.uk.   17 January 2017.

Dewey, Caitlin.   "The Complete History of 'Slender Man,' the Meme That Compelled Two Girls to Stab a Friend." The Washington Post.   27 July 2016.

Jones, Abigail.   "The Girls Who Tried to Kill for Slender Man." Newsweek.   13 August 2014.

Vielmetti, Bruce.   "Girl Believed She Had to Kill — or Be Killed by Slender Man, Attorney Says." Milwaukee Journal Sentinel.   16 February 2015.

Associated Press.  "Girl Gets 25 Years in Mental Hospital in Slender Man Case."   22 December 2017.

Creepypasta Wiki.   "The Slender Man."

David Emery is a West Coast-based writer and editor with 25 years of experience fact-checking rumors, hoaxes, and contemporary legends.