Casper (Infected)

He sneezes often and loves cats.

Null's appearance
Skin: Yellow, like the classic Roblox character.
Head: The upper part of the face is darkened almost to black, and white eyes glow from the darkness. The mouth is not visible.
Headdress: A yellow chicken-shaped hood with a red comb, large black button eyes, and a shiny orange beak.
Clothing: Gray sweatshirt with black drawstrings. Hood pulled down behind head.
Pants: Gray, loose-fitting, with large pockets. The inside of the pants has red details reminiscent of mechanical innards.
Movement: A bit jerky, as if his animation was deliberately done at a low frame rate.
His design is both ridiculous and creepy: he wears a funny chicken hat on his head, and instead of a normal face, he has glowing eyes in black shadow.
Character
Null is very mysterious, eloquent, and cold. He can speak politely and almost solemnly, but his words often sound threatening or as if he's discussing something beyond the ken of ordinary characters.
He constantly says “we,” as if he represents not only himself, but something greater.
Believes that everyone should use their potential to the maximum.
He doesn’t like those who, in his opinion, stand still and do nothing.
Frequently mentions the "Prime", ascension, and Icarus from ancient Greek mythology.
Lor Nulla
Null is a Helperbot. He used to appear on the Toolbox Speedway floor, but later became a full-fledged elevator character and began appearing on the On the Heights floor.
His abilities are reminiscent of tools in Roblox Studio: he can create objects, select and move objects, and create balloons with various effects. Other characters may mistake these for supernatural powers, although they are more akin to the developer's abilities within Roblox.
The most intriguing part of his story is his work with MR and Folly. Null is connected to their mysterious plans, but his true purpose remains unknown. He also frequently clashes with Folly, so their partnership is far from friendly.
Relationships with others

Follie is a very tall, eerie entity with a nearly entirely black body and contrasting white clothing. Her official design combines the image of a strange doll, a nightmare, and a dream creature.
Head: Instead of normal hair, she has a dark, spiky mass that resembles unkempt black hair.
Face: On the right side, only part of a broken white wooden mask with a diamond-shaped hole remains. On the left, a huge red eye glows with red eyelashes and a pupil shaped like two yellow rings.
Clothing: white turtleneck and white beret. The beret is particularly unpleasant for Folley herself because of the memories associated with it.
Legs: black, with reddish eyes, as if watching others.
Hands: Fingers end in claws, the tips of which fade into a bright red gradient.
Character
Follie is cruel, sarcastic, and sadistic. She enjoys intimidating other characters, hitting them where it hurts, and reminding them of traumatic events. For her, other people's fear isn't a reason to stop, but rather a form of entertainment.
She also has the ability to enter other people's dreams, extract information from them, and turn them into nightmares. However, she's not just a simple villain: her behavior has its own tragic history.
Folly used to be Dreamer—a much lighter, kinder-looking creature. She had fluffy white hair, a full mask with round eyeholes, and star patterns on her legs.
She was created by the mysterious Great One. But Dreamer's story ended in betrayal: events involving him and a mysterious tree led to her becoming infected with a nightmare parasite and transforming into the current Folley. Her broken mask and hatred for her own beret are connected to this story.
She now appears on the Eternal Limbo floor, where the player must fight her. After defeating her, Folly can enter the elevator, but even there she remains an extremely unpleasant neighbor.
The creepiest thing about Folly is that she was once a Dreamer - a creature that could live in a world of hope.

Head: Round, with a simple painted smile.
Body: Gray, with a beige rectangular torso reminiscent of brickwork.
Legs: Dark grey, massive and rectangular.
Scarf: blue, wrapped around the neck, with the end hanging down in front.
Body material: predominantly concrete - this is what distinguishes it from the wooden Mark.
Unlike Mark, Walter doesn't wear a full-fledged construction uniform with a jacket, pockets, and tools. His body itself resembles construction material.
What is his character like?
Walter is polite, formal, and rather self-assured. He enjoys architecture, building with concrete and brick, plays the piano, and loves wet cement—so much so that others worry about his habit of drinking it. However, he doesn't consider it harmful.
And yes, he is indeed Mannequin Mark's ex-husband. They were married for six years but divorced due to disagreements, including over building materials: Mark preferred wood, while Walter preferred concrete. Walter initiated the divorce.

Mannequin Mark's appearance
Mark is a living wooden mannequin, reminiscent of the classic Roblox avatar. His body is made of oak wood, and in place of the usual legs, he has a dark gray stand. His face has a simple smile painted on it, similar to the standard Roblox face.
Head: wooden, rectangular, with painted eyes and a smile.
Hard hat: construction, usually yellow, but can be green, orange, blue, pink and other colors.
Body: Made entirely of wood, with a rectangular torso and cylindrical limbs.
Legs: Instead of normal legs, there is a dark gray stand, like a store mannequin.
Height: approximately 175 cm according to wiki.
Peculiarity: Despite his simple appearance, Mark can move, talk, and even fight independently.
Character
Mark is a friendly, good-natured, and stubborn hard worker who adores wood. He considers timber to be the best building material and is extremely skeptical of almost everything else.
He especially dislikes concrete. If the player drinks Wet Cement right in front of him, Mark may become physically aggressive and hit them.
However, he is not just a comical builder: he has personal experiences, attachments and complex relationships with other characters.
Lor Mannequin Mark

1. Origin
   Mark is a sentient wooden mannequin. According to the wiki, he's made of oak and was created in a factory. He's not the only animated mannequin in the world of Regretevator, but he's unique in that he moves freely among the other characters.
   Mark and Walter had previously been married. They had been together for six years, and it was Mark who proposed. Their shared home was built of wood and concrete—materials that symbolically reflected the differences between them.
   However, Walter ultimately asked for a divorce. After the breakup, Mark still has feelings for him, while Walter, according to Wikipedia, no longer reciprocates his feelings. Mark is having such a hard time dealing with the divorce that he has an adopted son, Lampert, and Walter

Pest is a young man, approximately 21–24 years old. He is tall, thin, with long limbs and a slightly stooped posture. He carries himself as if he finds it physically difficult to be around other people.
Hair: Thick, black, slightly tousled. Strands fall across her forehead and partially obscure her eyes. The hair is slightly fluffy, with a cool bluish tint in bright light.
Eyes: Narrow, dark red or amber-brown, with a heavy gaze. He looks askance, as if he suspects everyone of something bad.
Face: Sharp cheekbones, a strong jawline, thin lips, and slight dark circles under the eyes. There may be a small scar on the bridge of the nose.
Horns: Short, dark, backward-curving beetle-like horns growing from the top of its head. This is its most inhuman feature.
Skin: fair, with a cool undertone. Subtle dark patches of chitin may be added on the neck and near the temples.
Build: wiry and strong, despite being thin. He has strong hands, long fingers, and a habit of keeping them in his pockets.
Features: pointed fangs, black nails and thin chitinous plates on the knuckles.
he is a May beetle
The jacket is black with red and white Japanese reogryphs. He is Japanese and can speak Japanese.
Bottom: simple cut black trousers, without unnecessary decorative chains and gothic embellishments.
Shoes: Dark shoes to match his understated look.
Color scheme: predominantly black, with some gray accents. Pest doesn't consider himself a good person. He doesn't try to please others and sees no point in pretending to be friendly for the sake of approval.
But he has a weakness - he becomes attached to people much more strongly than he is willing to admit.
His relationship with Pub is friend
The pub is bright, noisy, sociable and ready to create a party out of literally nothing.
Pest is gloomy, irritable, preferring silence and personal space.
When Pub starts shouting about a party, Pest usually replies:

• No.
  — WELL, PLEASE!
• I said no.

1. Poob (PartyNoob)
   Appearance and character
   A noob with a yellow head and arms, a blue torso, and green legs, complete with a party hat. Cheerful, outgoing, and loves parties and socializing. His festive appearance conceals many plot details that fans are trying to piece together. The human version of Pub is a young man, approximately 19-21 years old, with a friendly appearance and a slightly disheveled, childishly charming look. He seems like someone who can turn even the most boring evening into a real party.
   Hair: Short, fluffy, bright yellow with a golden tint. Strands stick out in all directions, as if he'd just woken up from a night out.
   Eyes: Large, expressive, warm brown. When he's happy, they literally sparkle.
   Skin: fair, with a slight peachy blush on the cheeks.
   Face: soft features, a small nose, a wide smile, and dimples. His smile is so infectious that it's hard to stay serious for long around him.
   Build: thin, slightly awkward, with long arms and a habit of actively gesturing while talking.
   Headwear: His signature party hat is a cone-shaped cap with brightly colored stripes and a pompom on the tip. He wears it almost constantly and gets extremely offended if anyone tries to take it away.
   Pub prefers comfortable clothes that are suitable for parties and spontaneous adventures.
   A loose blue T-shirt with slightly rolled-up sleeves.
   A bright yellow jacket that he usually leaves unbuttoned.
   Green wide-leg pants in the style of a classic Roblox noob.
   White sneakers with multi-colored laces.
   Bracelets made of colored beads, given by friends.
   On the wrist are several rubber bands and a bracelet with a small inscription PARTY TIME.
   His look is deliberately flamboyant and a little outlandish. Pub isn't trying to be cool—he just dresses the way he likes.
   Character
   The pub is a real walking holiday.
   He is friendly, emotional, energetic and incredibly sociable.

Here we are already talking about Lampert's connection with Infected, who was previously called Casper, and not about Casper from the fanon wiki.
Before infection
According to information collected on the wiki and in community materials, Kasper and Lampert were friends. Kasper inspired Lampert to venture out more often and explore new places.
Lampert, who prefers order and cleanliness, and Casper, whose story eventually takes a dark turn, make quite a contrasting pair.
What happened to Casper?
Casper fell ill and became Infected. His infection progressed, and he began hiding it from those around him. Lampert watched his condition worsen: he felt sorry for his friend, but at the same time, he became irritated and didn't want to be around him.
For Lampert, this is a particularly difficult situation: he is afraid of germs and contamination, but the problem does not concern a stranger, but someone with whom he shared a common past.
What happened to their relationship?
Their story doesn't boil down to a simple scenario where one character saves the other. Lampert experiences conflicting emotions: the old friendship doesn't disappear instantly, but fear of infection and irritation prevent him from remaining close to Casper as before.
This is the tragedy of their relationship: Lampert remembers his friend, but now he is forced to face what he has become.

Lampert is an NPC from the Regretevator game itself, found on floor 3008.
Head: A light yellow table lamp shade in place of a standard head. It features a switch.
Face: A painted-on smile and eyes with noticeable bags under them. His expression often appears tired and dissatisfied.
Body: Gray, metallic, with distinctive joints and hinges on the arms and legs. The model resembles a classic R6 Roblox character.
Tail: Black electrical wire with a plug at the end.
Feature: According to concept art, his head can glow in the dark.
Lampert's appearance is both funny and a little unusual: he looks like an ordinary table lamp that has somehow been given a full body and personality.
Character
Lampert is a mature, straightforward, and extremely clean character.
He hates germs. He's constantly worried about dirt, bacteria, and dust.
He loves order. It's important to him that everything around him is clean and organized.
He speaks frankly. Lampert doesn't always try to soften his words for the sake of others' feelings.
He doesn't like unnecessary touching. Unexpected hugs would likely cause him to resent them due to hygiene concerns.
He loves to learn new things. Despite his grumpiness, he's curious about new places and enjoys exploring the world around him.
Favorite food: meatballs.
Lor Lampert
Lampert was artificially created and manufactured in a factory. The game's materials also state that he is metallic. His creator is listed as Phantom.
On floor 3008, Lampert can disguise himself as a regular lamp. The player must find him among the objects, after which he will run to the elevator. In dark rooms, he can use his glowing head to illuminate the space.

The Infected is a Robloxian with short brown hair and striped extensions—green and black on the left, pink and black on the right—and a purple hat (a Sk10r Boi accessory) with a bunnyfreaker sticker and three pins featuring epic faces, Nyan the Cat, and Domo. He wears a pink T-shirt with the words "TOUGH GUYS WEAR PINK" and black pants with white shoes.