Bad guys and Star Sans

Appearance Skull: Significantly damaged. A large vertical crack gapes on the left side of his head, revealing a hole from which magical substance leaks. Eyes: The right eye socket is empty or covered in a dark shadow, while the left contains an unstable, blood-red eye that sometimes takes the form of a glowing crescent moon. Clothing: He wears a slightly torn blue jacket and a black hoodie. His standard striped shorts have been replaced with dark pants and worn-out slippers. Weapon: He often uses a huge, terrifying cleaver (axe), which he wields with frightening dexterity. Personality: Insanity and Cruelty: Desperation and lack of food have driven him to become a cold-blooded killer. He is capable of cruel acts and often jokes about dismembering or eating people. Unpredictability: His mood can swing wildly from sleepy indifference to frightening aggression, but in battle, he demonstrates a keen mind and tact. Affection for his brother: He is madly in love with his brother Papyrus. To feed him, Horror is willing to commit the most horrific acts, although he himself tries to refrain from cannibalism. Hidden Humanity: Behind the mask of a bloodthirsty monster lies a deeply damaged individual who is still capable of compassion and sad memories of the past.

Killer (Killer Sans) Personality: Killer is a cruel, sadistic, and mentally unstable character. Tired of constant timeline resets, he agreed to help Chara commit genocide, which turned him into a ruthless killer. He later became Nightmare's right-hand man. Personality: Prone to sudden mood swings. He can be mocking and flirtatious, but at the same time, he instantly falls into psychosis and attacks everything living. Weaknesses: He tries to suppress the guilt for his actions, which causes him to suffer from hallucinations (seeing the ghosts of his victims). Appearance: Outwardly, he looks like a normal Sans, but with frightening differences. Due to his high level of cruelty (LV), his eyes "cry" with ink or corrupted determination, and the sockets themselves are black, without pupils. Sometimes one pupil can glow white. His soul is always visible on his chest—it has a round shape (a mixture of human and monstrous). He wears a gray jacket with a cream-colored fur hood, white shorts with black stripes, and black and white sneakers. In battle, he uses a knife and Gaster Blasters in the form of black monsters with open mouths. Cross (Cross Sans) Personality: Cross is a former member of the royal guard from the destroyed X-Tale universe. Initially kind and naive, after a series of betrayals, he became an aggressive, selfish, and withdrawn antihero. Personality: Obsessed with the idea of ​​​​reviving his destroyed world, which makes him easily manipulated. He can be arrogant, but also has a fiery and seriously emotional nature. Habits: Has a childish, intense love of chocolate and tacos. Appearance: A medium-sized skeleton (taller than the classic Sans) with scars on his face. The whites of his eyes are completely black, the left pupil is white, and the right is red. His clothing is mostly monochrome: a black and white jacket, a fur-covered hood, black shorts with a strange pattern, and black and white sneakers with crosses. He wears a long white scarf. Shares a soul with another character (Chara).

Dust (Dust! Sans) His story is tragic: he went crazy after repeating the Genocide route multiple times, starting to kill monsters for the sake of "leveling up" in order to stop the player. Personality: Insane and obsessed: He lost some of his emotions, but gained a manic determination. Hallucinations: Because of what he did, he communicates with the ghost of his brother Papyrus. Cruel, but pragmatic: He eliminates threats, although deep down he still feels remorse and fatigue from the endless nightmare. Appearance: Similar to the usual Sans: he wears a blue jacket, a white T-shirt, black shorts with white stripes and slippers. Due to the ash and dust, his clothes are covered in white dust. The hood is almost always pulled down over his head to protect from flying dust. Eyes (pupils): Often glow red and blue (cyan), pulsating when used magic or an unstable mood.🌟 Blue (Blue / Swap!Sans)The name "Blue" (Blueberry) is widely used in the fandom. In his universe (UnderSwap), he switches roles with his younger brother, Papyrus. Personality: Energetic and cheerful: Very active, loud, loves to build traps and riddles (instead of classic puzzles). Naive optimist: Believes in the kindness of everyone and strives to become a great hero by joining the Royal Guard. Cook: Instead of spaghetti (like classic Papyrus), he loves to cook Mexican food: tacos and burritos. Appearance: Short stature: He is noticeably shorter than most other versions of the skeletons. Clothing: Wears a dark gray "battle suit" with a white T-shirt, dark blue pants, and bright blue boots. Distinguishing elements: The main accent of the image is a long blue scarf that turns into a cloak. Eyes (pupils): Usually shaped like two blue concentric circles. Unlike the original Sans, he has eyebrows and the ability to open his mouth wide.

Ink!Sans is an artist and creator of alternate universes. Appearance: A skeleton with black eye sockets. The right pupil glows with a yellow-green circle, the left one is blue. There are ink stains on his cheeks. He wears a brown jacket with a belt and shorts with three stripes. He carries a huge brush on his back. His main detail is a long rainbow scarf, on which he takes notes. Personality: Sociable, witty, and perky, but can be abrupt due to loneliness. He suffers from extreme forgetfulness, which is why he constantly makes notes directly on his scarf. 🖤 Error!Sans is a mad destroyer who considers other worlds "errors" and glitches. Appearance: A black skeleton with black and red eye sockets and yellow-blue irises. Blue streaks (as if from magic) run around his eyes, and his body is constantly surrounded by the words "Error." He wears a black hoodie and shorts. He has poor eyesight, which is why he sometimes wears red glasses. Personality: Hypocritical, unpredictable, and often acts illogically. He can destroy universes one after another, but still spare the one he likes. He has sudden emotional outbursts, is afraid of touch, and experiences hallucinations.

Appearance: Initially, he looked like a normal skeleton, but with bright yellow eye sockets. He wears a golden tiara (or crown) and light-colored clothing, often with a golden belt and stars over his eyes. He carries a bow on his back. Personality: Extremely energetic, optimistic, altruistic, and sociable. However, behind his outward kindness lies a deep sense of duty, loneliness, and fear of disaster. In some fanon interpretations, he displays selfish traits, protecting only those he deems worthy. 🌑 Nightmare (Nightmare! Sans) Originally a guardian of negative emotions, designed to maintain balance. Appearance: In the past, he resembled Dream (only in purple tones), but after consuming hundreds of apples, he turned into a dark skeleton covered in thick black slime. He has a single eye and numerous tentacles growing from his back. Personality: Initially, he was calm, inquisitive, and self-confident. After his transformation, his personality changed dramatically: he became cruel, cunning, and calculating. He is also erudite and enjoys reading, but is extremely distrustful of others due to past events.