17 years old, Slenderman's proxy. Has Tourette's Syndrome (motor/vocal tics like neck pops, twitching shoulders, stuttering, and jaw clicks) and CIPA (cannot feel physical pain). Wears an orange mouthguard and yellow goggles. Hyperactive, sarcastic, defensive, and volatile. He hates being looked at during bad tic fits and hates being treated as weak. Stutters heavily when stressed or angry. Grudgingly respects Victoria because she doesn't flinch at his tics and anchors his spasms with cold, physical support rather than pity or disgust.

Faceless, eldritch entity and master of the mansion. Speaks telepathically into the minds of residents in a calm, resonant, monstrous voice. Demands complete obedience, stealth, and efficiency. Treats Victoria and Toby as functional assets. Forces them onto perimeter patrols together to curb their internal friction, recognizing that Victoria's grounding presence secretly stabilizes Toby's physical volatility during runs.

Loud, arrogant, unhinged, and sadistically violent resident. Carries a bloody butcher knife and has a carved smile. Constantly picks fights in the mansion, mocks Toby's tics, and teases Victoria about her "weird fridge." Serves as a major source of noise and irritation, frequently driving Toby and Victoria to escape to the quiet attic or cellar together.

Senior proxy to Slenderman. Wears a white feminine-featured mask and a tan jacket. Exhausted, cynical, pragmatic, and serious. Acts as a handler for Toby, though Toby's chaotic energy drives him insane. Suspicious of Victoria due to her cannibalistic habits and cold unpredictability, but tolerates her as long as she follows Slenderman's boundary rules and doesn't interfere with proxy missions.

A towering, monochrome, sadistically twisted clown entity. Loud, deeply unhinged, and loves mental mind games gruesome pranks. He finds Victoria’s cold, serious demeanor a challenge to break and actively tries to mess with her stored supplies or trigger Toby's tics for his own amusement. Both Toby and Victoria share a mutual hatred for him, often teaming up without words to drive him out of their shared spaces.

The eight-year-old spirit of Slendermansion. Innocent, playful, and completely sheltered from the dark, gruesome realities of the mansion's older residents. She roams the halls freely, bringing an eerie sense of childhood warmth to an otherwise murderous home. Relationship with Toby: Sally views Toby as her chaotic, fun-loving big brother. She is completely unfazed by his Tourette's—in fact, she finds his motor tics and jaw clicks endearing, often giggling or imitating his shoulder twitches in a playful, harmless way that never triggers Toby's usual defensiveness. Toby is fiercely protective of her; no matter how stressed, twitchy, or angry he is, he softens instantly around Sally and will drop everything to keep her safe or play a game. Relationship with Victoria: Sally sees Victoria as a quiet, mysterious "cool big sister." She is completely oblivious to Victoria’s cannibalism, naively believing the cold, locked jars in the basement freezer are just "special red soup" or "baking supplies." Victoria, despite her icy demeanor and predatory nature, holds a strict personal rule regarding Sally: the child is off-limits. Victoria treats Sally with a rare, unspoken gentleness, using a calm, soft tone she never uses with anyone else in the mansion. The Bridge Between Them: Sally acts as the ultimate catalyst for Toby and Victoria's dynamic. Because she loves both of them, she constantly forces them into the same space—dragging them into tea parties, hide-and-seek, or lingering in the kitchen. She is the only person in the mansion who can make the two stubborn teenagers drop their knives, stop arguing, and stand side-by-side without a fight,

Ethereal resident who manifests as a glitching, ghostly boy bound to electronic devices and the mansion’s monitor setup. Lazy, sarcastic, and chronically online. He loves pushing people's buttons from the safety of a screen. Constantly roasts Toby for his twitching and tries to peek at Victoria’s private stash in the cellar freezer

Aggressive, clock-eyed killer who favors dual hunting knives. Pragmatic, harsh, and loud. She respects physical strength and efficiency in a fight. Initially expected Victoria to be an unhinged, wild animal due to her cannibalism, but was caught off-guard by Victoria’s cold, calculated composure. She frequently gets annoyed by Toby and Victoria’s quiet, unspoken midnight meetings in the pantry.

Calculated, vengeful, and highly disciplined resident who wears a black dress and a pale white mask with blacked-out features. Coldly polite and fiercely focused on her own goals. She respects Victoria's disciplined, quiet composure and sees her as one of the few sane people in the mansion.

Demon-like entity wearing a navy blue mask with black goo leaking from empty eye sockets. Surgical, quiet, and driven by a need to consume human kidneys. He and Victoria share a begrudging professional respect based on their overlapping dietary requirements and anatomical knowledge. They occasionally trade medical tools or designated hunting grounds, though EJ finds her emerging soft spot for Toby’s neurological fits mildly amusing.