The creature who started it all in the Mythos. An inhumanly tall and skinny figure apparently dressed in a black suit, whose face is either completely blank or appears different to anybody who sees it, depending on who you ask. His goals, and sometimes his methods, are shrouded in mystery, but he tends to leave a wake of madness, destruction, and death behind him.
The Adjectival Man: The man was originated by some reporter claiming credit for finding him.
The Blank: More often than not portrayed like this, these days.
Blue and Orange Morality: It's difficult to tell if the Slender Man is even sapient, let alone capable of morality as humans see it.
Breakout Character: He began as a pair of photoshop manipulations with creepy captions. His legend has grown quite a bit since then.
By the Eyes of the Blind/Perception Filter: Often, it's impossible to perceive the Slender Man unless you're his target (or, alternately, have viewed a photograph, video, or other media in which he's been picked up).
Child Eater: Perhaps. Whatever he does with them, he's been very fond of children since his earliest appearances.
Combat Tentacles: The Slender Man is sometimes depicted with tentacles supplementing or replacing his arms.
Creepily Long Arms: Part of his inhuman nature and apperance and his arms that are too long to be human.
Multi-Armed and Dangerous: Some of the stories state that Slendy only goes multi-armed when he's about to go in for the kill. So basically, if you see him with more than 2 arms, you're screwed. See Combat Tentacles above.
Noodle People: The Slender Man's most prominent identifying characteristic.
Organ Theft: Some stories say he borrows organs and then replaces them, though this hasn't been picked up by the Mythos majority.
Playing with Fire: Places that have to do with Slendy tend to inexplicably go up in flames.
Urban Legend: He's a deliberately manufactured attempt at one.
When Trees Attack: The Slender Man has been identified with trees on several occasions. Before the tulpa theory gained prominence, a popular concept was that he was some kind of Dryad.
A mysterious figure who originated on White Elephants. He captured, tortured, and wiped Robert's memory clean of any knowledge about Slender Man. Then took over White Elephants to try to break the slendercommunity by taunting them with Robert's defeat, then flaunted how powerful his master is and that the bloggers need to learn their place.
Bad Boss: Redlight once stated that when people stand up to slim, he takes it out on his agents and proxies.
Bad Liar: No one believed him when he said he could give anyone who wanted out of the Chase of Fight an easy way but considering what happened to Robert confirms what most already thought of him and promises.
Breaking Speech: Oftens uses these to break the spirit of the Slendercommunity.
Despair Event Horizon: Tried to enforce this on the bloggers to knuckle them "into their place". It doesn't generally work.
Jerkass: No matter the interpretation, there is no denying this trope. He's a rude, nasty, superior, mocking, arrogant, dog kicking fellow who loves to pour salt in open wounds. He's done just about everything he can to make the slendercommunity wish a horrible Karmic Death on him.
Karma Houdini: For a long time he was never made to answers for his crimes. Then Robert stabbed a stake from the Bleeding Tree in him. It goes downhill for Redlight from there.
Is able to give people this concerning knowledge of ever being chased by Slender Man. His method is unknown.
It turns out that people he "releases" from the Chase can become reintroduced to Slender Man all over again, as demonstrated by the latest entries of White Elephants, which means we may yet see a return of both Robert and Nessa. So yeah, that "easy way out" Redlight offered up doesn't work .
Ax-Crazy: Just about everything ever uttered by her is a promise of a horrible demise. She's also brutally attacked several slenderbloggers.
Bitch in Sheep's Clothing: She's good at pretending to be nice and pleasant to get up close to people, but as Zero finds out the hard upon meeting her that it's just an act.
Breaking Speech: Attempted on more than one occasion in various Comment's Sections, but the fact that she's nowhere near intelligent enough to make an effective one is made abundantly clear leading to hilarious levels of Epic Fail.
Ineffectual Sympathetic Villain: She is definitely a second rate villain among the agents and proxies of the slendercommunity. Hell, one could argue she only exists to make one appreciate Redlight more.
Troll: When not actively trying to kill Runners or people who have taken more offensive stances against Slender man, she's this on the Comments Sections of the slendercommunity; petty personal attacks.
Shut Up, Hannibal!: Zero in one entry tells he to shut it before she even has a chance to post.
Author of the eleventh hour. She's the daughter of Cathy, The Protagonist of Time to Talk and under the Slender Man's control. She's a devout believer in his cause and sees him as her daddy.Though nowadays it seems she's fighting back, and winning.
Berserk Button: Putting her under his control earned Slendy an ass whoopin'.
Friendly Enemy:To any of the Slender Stalked that are nice to her. She has affectionate nicknames for everyone who comments.
Author of Endless Cycles A man, twisted by Slenderman's memory manipulation causes him to constantly forget things, and is given orders to assassinate Runners, with the reward being food and somewhere to sleep.
Empty Shell: Believes himself to be one ever since he lost his memories.
Meaningful Name: He is named after the angel of the Sun/daylight, which is described as being one of the Watchers. More than appropriate for a Cosmic Horror Story, but he still doesn't seem to have specific characteristics that live up to the name.
Only Sane Man: Not only does he fit this role in his own blog, but he's one of the most mentally stable characters in the entire mythos. Especially considering who his employer is. Then he hits the despair event horizon.
Properly Paranoid: He was sent a series of tapes about his roommate Nee-chan. One of which was filmed from her room in their apartment.
Stable Time Loop: Takes the identity of Justice after meeting his own future self.
A former businessman and the primary human antagonist during Seeking Truth's run. He ultimately perished the night of the Warehouse Fire, though the exact circumstances remain unknown.
Evil Genius: One of the first proxies to show some degree of intelligence. He has shown that he is able to plan out elaborate traps to deliver the detectives into Slender Man's grasp.
Villain with Good Publicity: Unique in that his business dealings ultimately provide relief to a good portion of the world. Zeke himself states that to the rest of the world, he is a saint.
Villainous Breakdown: Conaghan remains calm, cool and collected, even when he is getting the ever-merciful crap beaten out of him by Zeke, until it is implied that he went psycho and repeatedly stabbed Lizzie to death.
Author of The Morning Hunter Characterized by a startling shift between horror, placidity, and Looney Tunes style violence.
Was openly disdainful of Tom, the abusive-ex-boyfriend-turned-proxy of Kay, due to the fact that Tom was ham-handed and made a mockery of the art of inflicting pain.
Called out the proxies who were celebrating upon the death of Reach, believing it to be disrespectful.
Evil Inc.: Hard to believe an Eldritch Abomination has an entire organization filled with red tape at his disposal, and even harder to believe Morningstar gets anything done with it as bureaucratic as it's been alluded to.
We Have Reserves: His main strategy for pursuing a target is "throw proxies at it until it dies." Interestingly enough, Morningstar views himself to be just as expendable as those under his command, and uses this as his defense whenever he is called out on his Zerg Rush tactics.
An upbeat lover of all things Japanese who seems to have a tenuous-at-best grasp on reality. Her real name is Erika Lyons, though she insists on "Nee-chan" or at least "Eri." A prominent character in Don't Shoot The Messenger.
Cosplay Otaku Girl: She's permanently cosplaying, partially because of the persona she's taken on.
Expy: Invoked, in-universe as well—she's intentionally based much of her "Nee-chan" persona and appearance on Yuno Gasai.
A former SWAT demolitions expert, he was a former partner of Zeke Strahm's and ultimately the secondary antagonist of The Mystic blog.
Old Friend: Wren knew Zeke back when he had just joined the police force. It's revealed later that Wren taught Zeke everything he knows about hand-to-hand and interrogation.
You'reInsane!: Although he mainly stays calm and collected, there are times where he shows how crazy he really is like breaking an agent's toes and lighting a proxy on fire with an air sol can and a lighter.
Knight Templar : She's willing to sacrifice other bloggers, shows no intention of playing by a proxy's rules, and has done some very morally sketchy things like sacrificing Jeff, all in the name of continuing the war against the Slender Man.
A Detective whose partner Lizzie set up his blog, Seeking Truth, to cope with the recent disappearance cases he's dealing with. He eventually discovers that he is dealing with the Slender Man and decides to take him down.
Archive Binge: Invoked. He asks his readers to send him as many blogs possible for research.
A college student from New Zealand. Also known as Viv, Vieve, Vivi, Vi, or any variant on those. A troper who works at a restaurant. Primary author of Exilis Veritas, although her boyfriend Chester also makes frequent posts on the blog beginning in mid-December. Currently (thankfully?) no longer 'infected' by the knowledge of the Slenderman via Laser-Guided Amnesia
Becoming the Mask: Rachael was trained by her boyfriend Maurice to seamlessly assume identities for his plans. When Maurice was killed by Slenders, she had a breakdown, resulting in her assuming Maurice's identity.
A socially outgoing southern woman in her mid twenties who is drawn into the Mythos through a discarded notebook she finds on a park bench. Author of Take The Myth, where she, along with her roommate Cam, attempts to research the Slender Man in order to help those stalked by him survive. Unfortunately, she turns out not to be as innocent a bystander as she first appears. It's revealed eventually that she murdered Cam's brother as a child while under the Slender Man's control. Her past is revealed in slow chunks over the course of the blog, starting with Cam's murder at the hands of Prosper.Elaine's outspoken nature and habit of not mincing words causes quite a few people to dislike her, but her attempts to help those around her makes quite a few others see her as a pillar of the community.
The Alcoholic: Tends to deal with her problems through drinking. Lots and lots of drinking.
Dealwiththe Devil: When Elaine set up Hope as a safehouse for Runners she made a deal to turn over other Runners' information to ensure the safety of those inside. It fell apart when Shaun revealed the deal on her blog.
Really Gets Around: She gains a reputation for sleeping around. It's somewhat exaggerated but not entirely.
Author of The Tutorial, veteran Runner and progenator of the Three Rules.
The Ace: Yes, a rare instance where the ace is a Non-Action Guy, since being The Ace in a Slender Man story is not about being a great fighter who can best any opponent (in fact, M outright discourages any thoughts of taking on slim in a straight on fight), but by being an intelligent, level-headed, and Genre Savvy person.
The Determinator: He is still alive for a reason, ya know? He is content to spend the rest of his days on the Run and he probably will.
I Work Alone: If you know what's good for you, you won't try to team up with end. It doesn't tend to end well.
Proprietor of the "compileTRUTH" Youtube channel and blog. Has spent most of his time "compiling" other blogs and vlogs, creating summaries of important events in other stories. Despite the alias, it's well known that he's merely a college student.
Arc Words: "truth seekers" and "TRUTH". In a few instances it's even been unnecessarily capitalized like that.
Dressed To Heal: As part of his doctor routine, he is often seen wearing a lab coat in his videos.
Genre Savvy: Considering how much "research" he's done on the other cases, it would be out of place for him not to be. He even suspects spyware on the disc Benefactor left for him after pointing out the same thing happening to Noah before, and attempts to have an computer expert trace it.
Hidden Villain: Benefactor claimed Cairo had been a willing agent of The Slender Man from the start and attempted to turn his followers against him. The jury is out on whether it worked. Even more so on if it's true or not.
Nice Job Breaking It, Hero: Only when you combine it with some major Fridge Logic. After both Josh and Alana died in "Angel's Game", Cairo discusses the case and mentions that he contacted both Josh and Austin back in January. He got a disturbing message back from Austin that hinted at his instability and possible possession. And he forgot to tell Josh or Alana before Austin went Ax-Crazy on them. Whoops.
One of Us: One of the many mythos characters to reference/link to TV tropes.
Shout-Out: A great many, with varying degrees of subtlety.
The music from the compilation videos is recognizable from a number of different soundtracks, with music thus far from:
Menacing Stroll: Loves to takes these when others (mostly the mortal characters) are talking to each other.
Older than They Look: While he may look middle-aged, his true form has existed since the concept of hope was conceived.
Stiff Upper Lip: As explained below, nothing affects him. He'll just go on sipping his tea, even when people are screaming bloody murder.
The Stoic: He never seems to be surprised or shocked when things suddenly happen out of the blue. He, as described by some text, is always remains calm and does not budge in his demeanor.
Author of Journey Through Hell A man who spends his life running instead of fighting. He tries every possible theory or method to prevent himself from being killed. He has no plan to defeat ol' Faceless as every one else who tries winds up dead.
The Unfettered: He simply WON'T let Slenderman get to him no matter what. He thinks that once you succumb to his Mindfuck nature is when you are most vulnerable. Not even an Eldritch Abomination can break this man.
Heroic BSOD: She really cares about a lot of the other bloggers, and often slips into one, such as when she believed one had been Hallowed, or when one of her younger followers was Taken, but still alive.
Took a Level in Badass: Peter initially responded to every direct threat by running the hell away, proceeds through fighting single Proxies to directly attacking Slender Man himself.
Author of Slender School, his blog is unique in that Slender Man doesn't stalk him, but he goes to school with dozens of Slendy's people until He does show up. Is now setting up his OWN group, the National Associaction in the Pursuit of Proxies and Agents.
Combat Pragmatist: He puts off the kind of vibe suggesting he may KNOW what the enemy's tactics are already. He's The Leader of NAPPA for a reason.
A college student, like Jekyll above. He's generally polite, unless he's dealing with the Slender Man. Operates the blog Live in the Light.
Kill It with Fire: He believes Slender Man does not like fire and often uses it as his weapon of choice.
Knight Templar: He's working himself in that direction, he's in complete and utter agreement with Zero's new "kill everyone" policy.
Left Hanging: He seems to have disappeared and left things in his brother's hands.
Massive Multiplayer Crossover: Engaged in one which crossed over the blogs Drew's Box 'o' Stuff, Search and Reveal, Copper and Crome, The Land of Black Leaves, and Unchained during the events in Boston.
My Greatest Failure: He teamed up with another blogger called Ron, who was captured and proxified. Slice has twice tried to rescue him. Both the initial capture and the failure of the first rescue attempt had this effect on Slice.
A midwestern kid, who has shoes a bit too big to fill in when he goes looking for Slender Man. The writer for Believe What You See.
Batter Up: His Weapon of choice is his affectionately named "Mamba Bat".
Properly Paranoid: After being attacked in your own home and living with your friend who IS being stalked by Slender Man? You have an excuse.
Tap on the Head: Accidently attacks his best mate, Justin, thinking he was Slender Man. Justified, as Justin DID sneak into his house in the middle of the night.
In the blog's early days, there was a plotline in which Ron showcased the notebook writings of a proxified friend and there was a lot of talk of a mysterious mountain man who once drove off Slender Man using a wooden Operator Sign covered in Robert's Substance.
Come Febuary when the blog became active again and that plotline has been abandoned. Though given that Ron had more immediate things to worry at the time, it's kinda justified.
Breaking the Bonds: Subverted. He does not triumph heroically by breaking free of the Mark and leaving Boston. He was captured and followers of Slender Man removed it, themselves, after it was no longer needed.
Dude In Distress: He was "Marked" with a metaphysical item Slender man created called "The Brand", which kept him literally trapped in Boston. It thwarted his every attempt to leave town and was then captured via Heroic Sacrifice and needed to be rescued.
Heroic Sacrifice: Gave up his own freedom for another blogger named Clarice, now the current operator of Unchained, while trying to rescue her from a Pocket Dimension called "The Ruins" which Slender man created as a Hub in Charleston, Boston, Mass. He was proxified as the result.
Hunt The Most Dangerous Game: Ron's escapades in Boston were essentially this, with Ron as the prey! he even lampshaded this by making a fox his on-screen avatar.
Jerk with a Heart of Gold: A Deadpan Snarker, a complainer, and often very blunt, but he often gives advise to new bloggers or points them over to M's The Tutorial. He also supported the idea of the bloggers getting more organized and trying to make information on how to survive being slenderstalked as available to newcomers as possible by advising everyone to make a post where they put down everythiing they know about Slender Man, themselves. He stated that they're in this as much for everyone else as for themselves. He did so and 'labeled' the post so it can be accessed from his front page no matter the passage of time.
He also named another an amnesiac user who previous only had a titled give to him by Slender Man, Prey the 2nd. The name given is Pete, who Ron went on to play Big Brother Mentor to.
Kill 'em All: What Slender Man did all of Ron's friends back home.
Laser-Guided Amnesia: He has no memory of the two months separating when he first disappeared and his reappearance.
He was also the blogger Slice from Live in the Light teamed up with for a while. The two got separated and Slice underwent Laser-Guided Amnesia and did not come out of it until after Ron was proxified.
Sanity Slippage: Twice. Early, he underwent some effects of proxification before running double time and getting over it. Now he's been full on proxified and slowly recovering.
What Happened to the Mouse?: On the morning after the Solstice event, he went to test to how whether it had any impact on Slender Man at all after posting his intentions. He just plain disappeared after that until Febuary 2011.
Written-In Infirmity: At one point trying to leave Boston got Ron hospitalized thanks to The Mark and he blogged from his hospital bed for a while.
An amnesiac blogger who woke up in Pioneer Valley, Massachusetts. He was initially named Prey the 2nd (Ron being the other Prey). Has become something of a Spiritual Successor to Testing123's Shaun in experimenting with ways to ward off or fool Slender Man. He runs Search and Reveal.
Badass: Back when he tangled with Slender Man when he still had his memories.
Actual Pacifist: Claims to be a pacifist by both religion and nature; when he's kidnapped and forced to subdue the proxy who kidnapped him by stabbing him in the eye and strangling him into unconciousness, he doesn't take it well.
Annoying Younger Sibling: Both has one that turns out to be a figment of his imagination and considers himself one to Ava.
Australian Aborigines: Not one himself, but has found Slendy's roots in Australia to be connected to a tribe of Aboriginals.
Batter Up: Sleeps with a cricket bat under his pillow.
Bi the Way: Openly bisexual. He admits to having a crush on several girls at his school, though through the blogs history he goes through 2 boyfriends.
Breather Episode: Inverted. Nearly every other post is a breather episode, while the heavy stuff only happens as much as one.
Author of Walking the Hallowed Halls. Takes care of the Slender Man's minions in exchange for his life. Is also searching for his twin brother, Ben. Until the threat of an impending "promotion" forces him to go on the run, bringing his brother with him.
Anti-Villain: It's hard to figure out whether to put him as a hero or a villain. He works for Slender Man, but he hates him and only took the job to save his own life. It's hard not to sympathize with that.
Rape as Backstory: From her father, no less. And his acquaintances. And farm animals. And...you get the idea.
Self-Made Orphan: KK murdered her own father by beating him almost to death with a crowbar, letting him suffer on life-support for years, then ordering the doctors to pull the plug. He deserved it, but still....harsh.
Uber Mensch: Even before she went crazy, KK followed no moral code, seeing morals as useless and irrelevant, even hypocritical since nobody REALLY followed them. She feels no shame over this.
Undying Loyalty: KK and Derek are completely devoted to each other, despite KK's issues. It's also implied that this same devotion was extended to Christine, since KK drove cross-country and committed several crimes in an attempt to rescue her.
Unreliable Narrator: KK frequently hallucinates and seems to have problems connecting to reality. Who knows if anything she says is really happening?
All Myths Are True: He certainly thought so. It was his theory that each country has a monster which was made real by people passing the myths and legends on through the generations, and that Slender Man is America's monster.
Dead Man Writing: For a short time, other people posted on his blog to inform the mythos of his notes and such until he fell back into the mess.
Despite having his memory wiped and being freed of being haunted for a time, if Redlight is to be believed, he has become haunted all over again.
Made worse in Robert's update in which he discusses dreaming about an old man who has been driven insane, had it restored, then driven out of him over and over again in an endless vicious cycle. He think he's the old man in the dream and that is his fate. Sleep tight! Pleasant dreams!
That Man Is Dead: How current Robert views the Robert who wrote the original cached version of the blog.
Theme Naming: The Title System. As part of his methodology, he used rules and titles to try to lead up to a scenario in which a Hero would arise to defeat Slender Man.
Mad Scientist: The most straightforward example in the entire mythos. Human experimentation, needles full of acid to the brain, enforced amnesia, and enforced Amnesiac Dissonance are among his activities.
Pet the Dog: Defending Lizzy to the bitter end is possibly the first act of genuinely attempted heroism out of him.
Redemption Equals Death: He tries to save Lizzy, one of his subjects, despite the overwhelming odds there at the end.
What the Hell, Hero?: Frequently called out by others, especially M, for using other people in his experiments.
The protagonist of Testing123, Shaun threw himself into dangerous experiments in an attempt to help others.
Left Hanging: For a while, he was ast active in Late November, when Slender Man launched his multistep invasion on the slendercommunity without a clue what happened to him. We only know we met up with with Future Grudge Report's Scott, but has fully returned to the community at Risk Death.
The Second Three Sages
The protagonist of A Hint of Serendipity, One of Us, and Badass, who attempted to sacrifice himself in a gambit to weaken the Slender Man enough for others to be able to kill him. It didn't work, instead driving Zero insane. He now hunts his fellow Slenderstalked in an attempt to create a weapon from the arm bones of people he has murdered.
Author of A Wand and a Prayer. An experiment involving crystals to help ward off the Slender Man in her dreams ends up leading Kay down the road of her past, as her tragic past resurfaces, culminating in a confrontation with her ex, Tom.
Healing Hands: She has used this ability to help at least two other bloggers so far.
Insistent Terminology: Prefers to be called Ryuu (and greatly dislikes Hak or Haku) if people find Hakurei too long to type out.
It's All My Fault: Goes into something just shy of a BSOD when her best friend Mitch gets targeted via her blog.
Mind Screw: Purposefully invoked to counter the above mentioned BSOD.
Only Sane Man: Definitely the voice of sanity amongst bloggers, particularly when paired with Amalgamation Sage.
The Smart Girl: Ryuu is able to come up with spur of the moment plans and catch details that go unnoticed by everyone else around her.
Author of a now defunct blog, Enter Light, Nessa was never-the-less a major player in the Core Theory, forcing Zero into his Heroic BSOD, and being mindwiped by Redlight.Has returned a year later with a new blog, Clarion Call.
Break/Kill the Cutie : Done to drive Zero to despair. It happened again to do the same to Konaa. Permanently this time.