Bad Guys | Bad Sanses

It includes Nightmare Sans (boss, Guardian of Negative Emotions), Killer Sans (the best killer), Dust Sans (psychopath), Horror Sans (big and hungry boy).
Their main goal is to destroy other universes and to create as much negative emotions and suffering as possible.
They have their own base and AU. This AU is very gloomy, with a bloody sky and gray, rotten earth and soil, but the main attraction is the huge, black castle in their AU—their base, where the team members live. It contains rooms such as Nightmare's Office, Nightmare's Room, Killer's Room, Dust's Room, Horror's Room, Living Room, Kitchen (Horror cooks most often), Dining Room, Bathroom, Main Hall, and a bunch of other rooms.

Phobias
A visual representation of someone being rejected and bullied

Loves
Negative emotions

Doesn't like
Liars, traitors, positive emotions

Personality
Initially, even before the bullying, Nightmare was quite a brash and very self-confident brother. He always wanted to learn new things, even if they were dangerous or not very useful for a variety of purposes. This habit has carried over to the current Nightmare, as he still reads books from time to time.

Nightmare is quite attracted to negative emotions and will do anything to obtain as many as possible. Killing victims is pointless, as without them, the negative emotions he craves won't be there. However, he does kill those who break their pacts with him, or force them to remember their past selves before their corruption, or when they anger him (though in these cases, he will still try to make his victims suffer and experience the deepest negative emotions, such as doom, despair, or other similar feelings).

Nightmare never lies, he only conceals the truth. He takes deals quite seriously, which is why he kills those who break them without question.

Although Nightmare is incapable of showing sympathy for anyone, he can, in a sense, "empathize" with those who share his fate—the rejected and mocked outcasts of society. Seeing such scenes, Nightmare flies into a rage and kills without hesitation anyone who has bullied those like him in the past. This is his only sign of weakness and fear, though he tries to deny it, despite fear also being considered a negative emotion.

Nightmare is highly educated and intelligent, having spent 500 years studying information and traveling the multiverse, spreading his negativity. Because of this, Nightmare acts like a fully grown adult, even though he's technically a grandfather.

His current appearance is quite sinister. All you can see are the outlines of shorts, a hoodie, and slippers. He's completely black, with four tentacles extending from his back that he can retract at will. His left eye constantly glows blue. This is due to his unstable body constantly "melting," and he also has no right eye; instead, he's oozing the liquid he's made of.

His jacket is a grayer shade of blue, with cream-colored fur trimming the hood. His shorts are white with black stripes. A red circle is located on his chest—his soul. He also has negativity emanating from his eye sockets, which appears depending on his state, specifically when he's angry. At certain moments, depending on the situation, barely noticeable pupils become visible in his eye sockets. This most often occurs when Killer experiences strong emotions, such as anger.

Thoughtful, but not prone to emotional outbursts. Killer Sans often reflects on his actions, but does not experience deep emotional experiences.

A love of killing. He spends most of his time focused on destroying other creatures and hates being belittled.

Lack of compassion. The killer feels no pain, and even enjoys it.

Multiple personality disorder. From time to time, a tiny spot appears in his right eye socket—this is classic Sans, trying to escape. At these moments, Killer experiences minor breakdowns and becomes anxious, reminded of the pain he caused. He may also develop a shadow similar to Papyrus, which intensifies his feelings of guilt.

Moments of childish innocence and playfulness. During periods of inactivity, Killer can exhibit a more humorous and childish side.

He's a skeleton. His jacket is a grayish shade of blue with blood on the bottom, and the fur on the hood is cream-colored and very frayed. His shorts are black with white stripes on the sides, slightly torn. Underneath the jacket is a blood-stained white T-shirt. He also wears pink, tattered, slightly dirty, fluffy slippers. There's a hole in his skull on the right side, and his left eye socket is empty, just like the right eye socket, which has a large red circle.

Psychological humor and sadistic tendencies. After years of starvation and loss of magic, Sans experiences extreme boredom and enjoys psychological humor and torture. He enjoys watching others suffer, such as listening to their screams. He enjoys decapitating human heads and using them as "head dogs."
He lacks a clear sense of morality. However, he retains a certain moral compass: despite his hunger, he refuses to eat people, even though he himself had previously established this rule.
Retrograde amnesia and severe mood swings. His progressive psychosis makes it difficult for those around him to trust Sans.
Spitefulness and vindictiveness.
Retaining some human traits. Despite the transformation, he retains a "bright spark" of kindness and caring. For example, he refrains from eating human flesh, despite being starving himself.
Depression and loneliness. The character is depressed and tries to distance themselves from other monsters.
Physical strength. He can easily rip off arms without using an axe. Incidentally, his main weapon is an axe, bloodied from previous victims.
Abilities. Retained the ability to teleport, manipulate bones, and use Gaster Blasters, a floating skull resembling a dragon's or dog's that emits a laser from its mouth.

His clothes are covered in the dust of the monsters he's killed. Sans wears a blue hoodie. The iris of his left eye is dark red, and the pupil is blue, giving the steam coming from his eyes a purple tint—a mixture of red and blue. He often speaks to a ghost resembling his brother Papyrus, visible only to him. This may be due to his descent into madness, and this ghost either haunts Sans or helps him cope with the fact that he killed his brother. The ghost has no body. It has only Papyrus's translucent head with red eyes, floating red gloves, and his scarf.
Sans himself wears a dark blue jacket with a gray hood that he always keeps on, often obscuring his face. He wears a white T-shirt underneath, but the dust has made it appear grayer. He also wears black knee-length shorts with two white stripes on the sides. He also wears pink fluffy slippers, but the dust has made them appear grayer.

A sadist and sociopath, he takes pleasure in brutal murders and tormenting his opponents.
Unpredictable. Can betray even friends.
He is evil and loves to make dark jokes.
He has no sense of regret, but if he is reminded of who he was, he may reflect and stop fighting.
He frequently communicates with the ghost of his brother, Papyrus, who is visible only to him. This may be a consequence of a mental disorder or a way to cope with the loss of his brother.
Laziness and nihilism are characteristic traits of the original Sans, but under the influence of circumstances they have become stronger.
Possesses determination.
He is narcissistic and self-confident - for example, he revealed his abilities, which led to him forgetting some of his actions.
Abilities: Can summon the Gaster Blaster, a giant flying skull resembling a dragon's or dog's. Bones: Can be thrown or spawned in hand.