Sans

Biodata

Power Progression

Background / History

Murder’s early actions center on defeating a human who repeatedly returns through loading saves. He sets traps in Waterfall, hunts monsters in the Core, and destroys the True Lab’s amalgamates, telling himself that he has freed them. Although he believes his LV is higher than the human’s, he imprisons the human for an hour rather than killing him and triggering another return to the past 1.

During this period, Murder imagines an apparition called “Paps.” He knows the apparition is not real, but still speaks with it and hears it urge him onward. When he later discovers unfamiliar knife marks in the Core, his exchange with Paps reflects his realization that he is no longer in his own timeline 1 2.

Murder had secretly researched determination after discovering that even a trace could preserve his memories through resets. Sometime after the two-hundredth reset, he completed the Determination TV Amphibian Model 1000, which protects his room from a reset’s effects 5.

After initially fighting Killer, Murder accepts her offer to restore his universe and help him atone by protecting other worlds. Killer resets the Underground while his room remains intact. Before leaving, he gives Papyrus a farewell note, leaves several years’ worth of money, and asks her to care for his Pet Rock. He and Killer then formally introduce themselves and begin traveling together 3 4 5.

Appearance

Murder is depicted as a handsome, white-haired man with a humanlike appearance 8.

• White hair, which he rubs while puzzling over the human’s absence 2.
• Red-and-blue pupils when preparing for battle 6 15.
• A pupil that alternates between blue and yellow while discussing a possible solution to the Entities 17.
• Taller than Killer and Insanity, according to his own introduction to Lust 40.

Personality

Murder is observant and controlled under pressure. He notices that the Core’s battle damage does not match his own attacks and deliberately stays calm while investigating the timeline discrepancy. In combat, he favors combinations, restraint, and exploiting an opponent’s weaknesses rather than relying only on force 1 2 3.

His willingness to slaughter monsters contrasts with his desire for an end to the human’s repeated violence. Killer’s promise to restore his home and offer him a path toward redemption appeals directly to him. His concern for Papyrus also survives his departure: he worries about her rent, her care, and who will tell her bedtime stories 1 4 5.

He remains cautious about powerful allies and unwinnable fights. He suspects Dr. ▇▇▇’s device may be intended for surveillance, agrees to help Insanity only after checking that Nightmare is not among her three pursuers, and accepts retreat when the opposition overwhelms him and Killer 6 30 31.

Abilities & Skills

Bone Magic

Murder summons ordinary bones and Blue Bones for attacks, traps, and coordinated barrages 1 3 9.

• Blue Bones punish movement; standing still is the safest response, which Murder exploits to set up other attacks 1.
• Can imprison the human for approximately one hour 1.
• Creates large waves of bones and positions them along an airborne enemy’s path 9 26.
• His restraints are not absolute: Killer breaks free of his Blue Bones during their first fight 3.

Shock Waves / Blasters

Murder summons energy-firing cannons, described as both Shock Waves and blasters 1 2.

• Surrounds immobilized targets with cannons for concentrated fire 1.
• Uses delayed charging to combine blaster fire with bone restraints 3.
• Maintains sustained barrages alongside allies, including the Sixfold Judgment against X-Chara 9 26.
• Can summon an enormous cannon and charge it with simulated Anti-Determination 47.

Gravity Manipulation

Murder uses gravity magic to immobilize, slam, launch, or pull targets 1 8 11 47.

• Pins the human and X-Chara in place 1 25.
• Launches enemies into walls, the ground, or the ceiling 1 8 11.
• Pulls Lust out of an approaching monster’s reach 47.
• Limit: stamina expenditure increases with the controlled object’s mass. He therefore moves Lust rather than trying to restrain the much larger monster 47.

Shortcuts and Teleportation

Murder uses shortcuts for rapid movement and combat repositioning 2 7 9.

• Travels quickly between locations such as the corridor and Core 2.
• Repositions around enemies during coordinated attacks 9.
• Grabs Killer and teleports her away from UV Killer 29.
• Limit: shortcuts cannot be used inside Gaster’s hidden maze in Underlust 45.

Close-Quarters Combat

Murder can fight at melee range with magically enhanced fists, meeting Killer’s knife strikes head-on 3.

• Combines punches and kicks with magical follow-up attacks 3 9.
• Uses a Rising Dragon Fist during the finishing assault on ULB’s human opponent 12.
• Dodges uv!Murder’s attacks by instinct while temporarily blinded 33.

Determination Research and Anti-Determination

Murder’s research covers memory preservation through resets and methods of erasing amalgamates 5 17.

• Builds a determination-based device that shields his room from resets 5.
• Prepares simulated Anti-Determination to sever an amalgamate’s determination 47.
• Limit: the technique is ineffective against humans because their determination quickly reunites 47.
• Cost: it drains his stamina and magic 47.

Entity Soul Shattering

With the box pendant, Murder can shatter Entity souls and release or absorb the souls within them 16 23.

• The pendant resonates and guides his hand toward Sanstrosity’s soul after the creature is calmed with ketchup 16.
• He and Killer theorize that satisfying an Entity allows it to willingly accept the pendant’s intervention; this remains their working explanation 19.
• Destroys Xx_FRESHSANS_xX’s soul and absorbs its contents into the pendant 23.
• This power depends on the pendant, which Killer later gives to the human protagonist of that world 23.

Equipment / Items

• Determination TV Amphibian Model 1000 — his invention, used to protect his room and preserve his memories during Killer’s reset 5.
• Dr. ▇▇▇’s device — allows the doctor to appear beside him nonphysically and assist in dangerous situations; Murder uses it while investigating the human’s apparent immortality 6 10.
• Box pendant — used to shatter Entity souls; relinquished to the local human protagonist after the redemption arc 16 23.
• Ketchup bottles — carried in his clothes and used to calm Sanstrosity. Killer remarks that he also likes ketchup himself 16 37.
• Cigarettes — their smoke irritates Xx_FRESHSANS_xX. Murder rejects Killer’s suggestion to smoke ten at once as dangerously excessive 21.

Relationships

• Killer — traveling partner and fellow seeker of redemption. Their initial fight becomes a partnership after she offers to restore his universe; they repeatedly protect one another in battle 3 4 5 29.
• Papyrus — younger sister. Murder leaves money and instructions for her before departing and promises to visit if possible 5.
• Paps — an imagined apparition whom Murder knowingly addresses; its dialogue voices his own fears and conclusions 1 2.
• Dr. ▇▇▇ — former senior and intermittent adviser. Murder remembers his disappearance during an experiment and remains suspicious of his motives 6 10 37.
• ULB — another Sans whom Murder and Killer rescue and befriend before restoring her universe 8 12 13.
• Classic Sans — temporary ally against X-Chara and during the search for Ink 25 26 27.
• Insanity — initially a stranger who knows another Murder; becomes his teammate after he and Killer help her escape Nightmare’s recruitment effort 30 31 39.
• uv!Murder — hostile counterpart serving Nightmare. Murder fights him directly and rejects his enthusiasm for slaughter 32 33.
• Bill Sans — dangerous benefactor. Murder accepts his deal to remove the pursuing Bad Sanses, obligating the group to attend a future feast 38 39.
• Lust — local guide and ally in Underlust. Murder helps investigate his world’s hidden True Lab and protects him inside Gaster’s maze 40 43 45 47.

Story Role / Major Arcs

Notable Quotes

“I'm Murder. My real name is Sans.” 5

“My name is Sans, but Murder suits me better.” 13

“Your damage... isn't even as high as the human's back where I'm from.” 25

“We somehow ended up signing our lives away.” 38