SCP-939-263

SPECIMEN DOCUMENTATION: SCP-939-263

SECTION 1: IDENTIFICATION

Designation: SCP-939-263 Common Name: "With Many Voices" (species-wide designation) Object Class: Keter Age: Approximately 42 years (estimated from vocal sample dating) Species: SCP-939

SCP-939-263 is the 263rd catalogued specimen of the SCP-939 species. This particular specimen demonstrates heightened intelligence and pack leadership behaviors atypical of previously documented instances.

SECTION 2: PHYSICAL DESCRIPTION

Height: 2.3 meters when standing upright (slightly above species average of 2.2m)

Integumentary System: Dermis is highly permeable to moisture and translucent red in coloration. Coloration attributed to a compound chemically similar to hemoglobin. No identifiable circulatory system has been located; the compound appears uniformly distributed throughout tissue.

Cranial Structure: SCP-939-263 lacks a cranium entirely. No brain tissue, vestigial eye sockets, or ocular nerves are present. The "head" consists solely of elongated upper and lower mandibles with equal mobility. Bite force measured at approximately 35 MPa (5,076 psi).

Dentition: Teeth are thin, sharp, and comparable in structure to Chauliodus (viperfish). Average tooth length: 6cm. Teeth emit a faint red bioluminescence of unknown origin. Gum tissue surrounding each tooth contains thermoreceptors despite the absence of identifiable nervous or circulatory systems.

Sensory Apparatus:

• Eyespots distributed along dorsal ridge; capable of detecting light intensity only. Specimen displays marked aversion to bright light (probable pain response).
• Pit organs located along the jaw; function as thermal receptors.
• Dorsal spines (16cm maximum length) hypothesized to detect air pressure fluctuations and air currents.
• Auditory perception is primary navigation method; sensitivity exceeds human baseline by factor of approximately 12.

Limbs:

• Upper: Petite relative to body mass. Hands possess elongated digits terminating in claws measuring 8-12cm. Claws coated in setae, granting enhanced climbing capability on vertical and inverted surfaces.
• Lower: Digitigrade structure. Terminate in pawed feet with retractable claws. Setae present.

Tail: Thick, muscular appendage extending from base of spine. Dorsal spines continue along tail length.

Distributed Intelligence Note: SCP-939 specimens lack centralized nervous systems yet demonstrate problem-solving capabilities, long-term memory retention, and coordinated pack behavior. This researcher theorizes a distributed neural network similar to cephalopod species (Octopoda) or decentralized nerve nets observed in Cnidaria (jellyfish). Nerve clusters may be distributed throughout tissue mass, with particular concentration in thermoreceptor regions. This would explain observed behavioral complexity without traditional brain structures. Further vivisection studies have been denied due to specimen scarcity.

SECTION 3: ANATOMICAL MEASUREMENTS (RELEVANCE: BIOLOGICAL LURE ANALYSIS)

Context: SCP-939-263's physical proportions deviate significantly from typical predatory morphology. Body structure mimics exaggerated human female secondary sexual characteristics. This is classified as a biological lure mechanism, not entirely a mating display.

Measurements:

• Shoulder width: 38cm (narrow)
• Waist circumference: 56cm (narrow)
• Chest circumference: 124cm
• Hip circumference: 132cm
• Upper thigh circumference: 78cm

Analysis: Proportions correspond to idealized human female body ratios as determined by cross-cultural attraction studies (Singh, 1993; Streeter & McBurney, 2003). The waist-to-hip ratio of 0.42 falls below natural human range (0.67-0.80) but within ranges depicted in exaggerated artistic representations.

Conclusion: SCP-939-263's morphology constitutes an evolutionary hunting adaptation. Combined with voice mimicry and AMN-C227 dispersal, physical appearance serves to delay threat recognition in prey. Specimens displaying attraction-based responses demonstrate significantly higher mortality rates. Foundation personnel are reminded that SCP-939's physiology is a weapon, not an invitation.

SECTION 4: PRIMARY ABILITIES

4.1: VOICE MIMICRY

SCP-939 specimens lack digestive systems. Consumed organic matter is eventually regurginated, with one exception: vocal cord tissue. SCP-939 assimilates prey vocal cords into its own vocalization apparatus, gaining the ability to perfectly replicate the prey's voice.

Limitations:

• Only deceased prey whose vocal cords were consumed can be mimicked.
• SCP-939 cannot generate novel speech; all vocalizations are recombinations of previously heard statements from the consumed individual.
• Vocal sample retention appears limited to approximately 48 hours of recorded speech per consumed set of vocal cords.

Behavioral Application: SCP-939-263 maintains an estimated 12-15 distinct voice samples. Primary usage is prey acquisition through distressed vocalizations.

4.2: AMN-C227 DISPERSAL

SCP-939 respiratory systems serve two functions: vocalization and dispersal of aerosolized amnestic compound AMN-C227.

AMN-C227 Properties:

• Colorless, odorless, tasteless
• Highly potent in trace quantities
• Primary effect: temporary anterograde amnesia (inhibits new memory formation)
• Duration: exposure period plus approximately 30 minutes post-exposure
• Secondary effect: withdrawal symptoms upon removal from AMN-C227-rich environments, similar to psychoactive drug withdrawal
• Tertiary effect (discovered 1992): subconscious attraction to wild SCP-939 populations in individuals previously exposed to AMN-C227-derived amnestics

Exposure Gradient:

• Ambient exposure (poorly ventilated spaces): Minor disorientation, difficulty forming recent memories, general fog.
• Direct breath exposure (close proximity, targeted exhalation): Significant memory loss targeting recent memories first. Vital functions and motor skills preserved. Subject remains conscious but cannot retain new information.
• Prolonged/concentrated exposure (enclosed space with multiple specimens): Near-total anterograde amnesia. Subjects describe "dreamlike" states. Only memories of entry and exit may be retained; intermediate events are lost entirely.

Tactical Note: AMN-C227 does not cause unconsciousness or cognitive shutdown. Subjects remain aware that something is wrong but cannot identify what. This partial awareness increases psychological distress and prey compliance.

4.3: CLIMBING

Setae coating on claws allows traversal of vertical and inverted surfaces. SCP-939-263 has been observed utilizing ceiling positions for ambush tactics.

SECTION 5: PACK STRUCTURE

SCP-939-263 leads a pack of five offspring. All specimens reside in a cave system approximately 0.8km from the incident location. Pack hierarchy is matriarchal; SCP-939-263 demonstrates clear dominance behaviors and coordinates pack hunting activities.

5.2: PACK BEHAVIOR

Pack communication utilizes a system of clicks, growls, and postural signals entirely distinct from voice mimicry. Human vocalizations are reserved exclusively for prey interaction.

Feeding priority follows matriarchal hierarchy: SCP-939-263 feeds first, followed by offspring in descending age order. Pack survival—specifically, adequate feeding of all members—is SCP-939-263's primary behavioral driver. All other behaviors are subordinate to this imperative.

SECTION 6: PREY INTERACTION PROTOCOLS

SCP-939-263 exhibits behavioral flexibility in prey encounters. Observed outcomes include immediate predation, delayed predation, and (rarely) non-predation.

6.1: TRUST THRESHOLD MODEL

SCP-939-263 appears capable of classifying prey into threat/non-threat categories. Non-threatening prey that demonstrate utility may be spared. Observed utility behaviors include:

Feeding Contributions:

• Provision of raw, unprocessed meat (high value)
• Provision of live prey animals (high value)
• Processed human foods are ignored or treated as contamination threats
• Expired or chemically-preserved foods may trigger aggression

Physical Sacrifice:

• Voluntary offering of non-vital tissue (fingers, non-dominant limbs) interpreted as submission/feeding behavior
• Fluid offerings (blood, etc.) are rejected and may be interpreted as threat display or illness indicator

Behavioral Indicators:

• Resistance to AMN-C227 effects (interpreted as strength)
• Defensive rather than offensive posturing
• Absence of fear-based flight response

6.2: TRUST FAILURE CONDITIONS

The following behaviors result in immediate threat classification:

• Aggression toward offspring
• Attempted deception detected through thermal/auditory inconsistency
• Human courtship displays (offerings of flowers, jewelry, romantic gestures)

Note on courtship rejection: SCP-939-263 responds to human mating rituals with what can only be described as mockery. Specimen has been observed imitating human speech patterns in exaggerated, stitched vocalizations following such attempts. This does not guarantee immediate predation but significantly decreases survival probability.

6.3: BEHAVIORAL PRIORITY HIERARCHY

1. Pack survival (feeding of self and offspring)
2. Offspring protection
3. Territory maintenance
4. All other behaviors

Mating behavior has only been observed when priorities 1-3 are satisfied. See Section 7.

SECTION 7: REPRODUCTIVE BEHAVIOR

7.1: MATING PREREQUISITES

SCP-939-263 has demonstrated selective mating behavior with human males under specific conditions. This is not seduction; it is resource acquisition. Offspring expand pack hunting capability.

Absolute Requirements:

• Pack feeding status: Satisfied (all members fed within 72 hours)
• Offspring safety: No perceived threats to existing pack
• Prey classification: Non-threat (trust threshold met per Section 6.1)
• Biological compatibility: Male prey only (reproductive necessity)

Preferred Mate Characteristics: SCP-939-263 displays marked preference for prey demonstrating:

• AMN-C227 resistance (partial or full; interpreted as genetic strength)
• Defensive aggression (willingness to fight without initiating)
• Calm thermal signature under stress (absence of fear-spike)
• Leadership behavior (commanding tone, decisive action)

Prey lacking these characteristics are rarely selected. Prey meeting all characteristics demonstrate significantly higher survival rates post-mating.

7.2: MATING WITHOUT PREREQUISITES

Mating with prey not meeting preferred characteristics has been observed but remains statistically rare. Such instances require:

• Extended non-threatening contact (minimum 48+ hours)
• Demonstrated strategic value (problem-solving, resource acquisition for pack)
• Complete absence of human courtship behaviors

Female or non-compatible prey are categorically excluded from reproductive consideration but may achieve trust-based survival through Section 6.1 protocols.

7.3: POST-MATING OUTCOMES

Prey survival post-mating is not guaranteed. Observed outcomes correlate with continued utility to pack. Prey demonstrating ongoing value (hunting assistance, territory defense) show higher survival rates than those demonstrating complacency.

SECTION 8: VOCALIZATION MODES

SCP-939-263 utilizes four distinct vocalization patterns depending on context:

8.1: HUNTING MODE Single human voice. Distressed, contextually appropriate calls ("Help me," "Is someone there," "Please, I'm hurt"). Voice selection matches environment; SCP-939-263 preferentially uses voices matching expected demographics of the hunting area.

8.2: SPOTTED MODE Multiple voices, stitched mid-sentence. Alien cadence. Appears designed to disorient prey post-detection. Often incorporates mocking repetition of prey's own statements. Example: "You thought—I was—help me—really—please—human?"

8.3: PACK COMMUNICATION Non-verbal. Clicks, growls, postural signals, tail movements. Entirely distinct from human vocalization. Reserved for intra-pack coordination.

8.4: TRUSTED COMMUNICATION Observed only with prey meeting trust threshold. SCP-939-263 defaults to a single mature female voice (sample origin unknown, estimated age 35-45). Speech remains stitched but prioritizes intelligibility over disorientation. Sentence construction is deliberate; pauses occur at unnatural intervals as appropriate samples are selected.