Forge: Doppelganger

[Target entity — the current file, to be filled]
{
 "id": "species.firgol.monsters.shapeshifter.doppelganger",
 "name": "Doppelganger",
 "native": "WEHMONU",
 "aliases": [],
 "type": "species",
 "subtype": "monsters",
 "summary": "Mysterious humanoids with the power to perfectly imitate others.",
 "content": {
  "sigtaara": "WEHMONU",
  "classification": "Shapeshifter",
  "description": {
   "short": "Mysterious humanoids with the power to perfectly imitate others.",
   "full": "Doppelgangers are mysterious humanoid beings with a hauntingly pale complexion and featureless faces. They possess an innate ability to shapeshift into the appearance of any humanoid they encounter, with experienced individuals capable of swift transformations. Solitary by nature, they prefer to operate independently, observing society from the shadows. Occasionally, they may embark on a disturbing pursuit to completely assume the life of an intriguing individual. While able to interbreed with other humanoid races, their offspring lack the true shapeshifting abilities of their doppelganger parent. Among doppelgangers, rare individuals possess the skill of 'meshing,' seamlessly blending the appearances of multiple studied individuals. Throughout their lifespan, doppelgangers may encounter moments of existential contemplation, grappling with questions of identity and purpose. Some embrace solitude; others seek fleeting companionship with fellow shapeshifters. They remain enigmatic figures, their true intentions veiled in mystery as they navigate the world with unparalleled deceit."
  },
  "anatomy": {
   "structure": "Humanoid",
   "skin": "Pallid, semi-translucent, glows faintly in dim light",
   "facial_features": "Featureless, blank visage",
   "mobility": "Extremely fluid movement; limbs capable of elongation and subtle contortion",
   "internal_adaptability": "Capable of shifting internal structure to mimic other humanoid physiologies",
   "strengths": [
    "Uncanny agility and flexibility",
    "Internal mimicry of organs and tissues",
    "Smooth shapeshifting transitions"
   ]
  },
  "genetics": {
   "unique_traits": [
    "Shapeshifting encoded into active genome",
    "Latent morph-memory imprinting"
   ],
   "reproduction": {
    "interbreeding": "Possible with humanoids; offspring lack shapeshifting",
    "true_offspring": "Only from union of two doppelgangers; full abilities inherited"
   }
  },
  "growth": {
   "infant": "Vulnerable and unable to shapeshift",
   "juvenile": "Experiments with form; limited mimicry",
   "adolescent": "Learns by observation; rudimentary shapeshifting develops",
   "adult": "Fully capable of mimicry and infiltration; capable of 'meshing' if skilled",
   "lifespan": "Unknown; presumed centuries if undisturbed"
  },
  "abilities": [
   "Shapeshift — mimic humanoid forms perfectly",
   "Meshing — blend features of multiple targets (rare talent)",
   "Memory mimicry — imitate speech patterns and habits with high accuracy"
  ],
  "behavior": {
   "social_structure": "Primarily solitary; loose networks may exist among older individuals",
   "habitat": "Urban shadows, hidden enclaves, abandoned ruins",
   "mentality": "Observational, secretive, calculating",
   "existential_risks": [
    "Identity erosion",
    "Compulsive mimicry",
    "Isolation-driven madness"
   ]
  },
  "cultural_significance": {
   "legends": [
    "Doppelgangers who replaced noble heirs",
    "Spies and assassins vanishing into new faces",
    "Mirror cults worshiping faceless truth"
   ],
   "perceptions": [
    "Feared as deceivers",
    "Admired for adaptability by some espionage societies",
    "Hunted in regions with strong magical orthodoxy"
   ]
  }
 },
 "tags": [],
 "relations": {},
 "sources": {},
 "timeline": {},
 "meta": {
  "status": "active",
  "notes": "Migrated from legacy repository structure."
 }
}

[Schema template & register reference — Glassling (species-firgol-monsters-shapeshifter-glassling). Match its SHAPE and VOICE; do not mirror its content.]
{
 "id": "species.firgol.monsters.shapeshifter.glassling",
 "name": "Glassling",
 "native": null,
 "aliases": [],
 "type": "species",
 "subtype": "monsters",
 "summary": "Crystalline lightbenders that mimic form through refraction rather than flesh.",
 "content": {
  "sigtaara": null,
  "classification": "Shapeshifter",
  "habitat": [
   "Irudy",
   "Siniath"
  ],
  "description": {
   "short": "Crystalline lightbenders that mimic form through refraction rather than flesh.",
   "full": "Glasslings are delicate, translucent shapeshifters that rely on refraction and illusion rather than physical transformation. Their bodies bend light to mimic individuals, animals, or environments. Found in Irudy’s crystal caverns and Siniath’s coastal grottoes, they are not predators, but enigmatic reflections of the world around them. Their presence unsettles or inspires depending on one’s beliefs, appearing as statues, mirages, or mournful shades by the sea."
  },
  "anatomy": {
   "structure": "Slender crystalline frame with fluid internal refractive tissues",
   "mobility": "Graceful and slow; movements create ripples in surrounding light",
   "skin": "Transparent and glossy; bursts with color when exposed to light or magic",
   "senses": "Sensitive to light shifts, emotional intensity, and air movement",
   "fragility": "Extremely brittle if struck directly; prone to shattering"
  },
  "shapeshifting": {
   "limits": "Cannot alter physical form; only visual mimicry through light distortion",
   "targets": "Individuals observed during emotional highs—joy, grief, love",
   "refraction_shell": "Creates illusions of posture, shape, and clothing; collapses on contact",
   "distortion_field": "Presence warps surrounding outlines and causes vertigo in close observers"
  },
  "behavior": {
   "cognition": "Moderately intelligent; long memory and high curiosity",
   "communication": "No known language; uses reflected gesture mimicry",
   "temperament": "Avoidant, observant, empathetically reactive",
   "social_structure": "Solitary; rare small clusters gather for 'light songs'"
  },
  "reproduction": {
   "method": "Crystalline budding — a fragment is separated and slowly grows over decades",
   "maturation": "Begins inert; awaken slowly in high-humidity mineral zones",
   "growth_pattern": "Precision of mimicry improves with age",
   "lifespan": "Several centuries unless shattered"
  },
  "weaknesses": [
   "Extremely fragile if struck or dropped",
   "Cannot replicate sound or touch",
   "Illusions fail upon physical contact",
   "Vulnerable to dry air and sudden changes in light"
  ],
  "cultural_significance": [
   "Treated as cave spirits or guardians by Irudic crystal-masons",
   "Feared as omens of drowning by Siniath coastal cultures",
   "Kaelotaedhel artists speak of being mirrored in dreams by Glasslings"
  ],
  "variants": {
   "irudy": {
    "local_name": "Shardborn / Crystaflects",
    "habitat": "Geode vaults, underground aquifers, and prism-lit caves",
    "traits": {
     "optical_discipline": "Pose as gem formations or statues for decades",
     "refraction_mastery": "Replicates glow of arc-lamps and enchanted crystals",
     "cultural_mimicry": "Mirrors gestures of artisans and forge-users",
     "group_convergence": "Gather at sacred or historically rich ore sites"
    },
    "temperament": "Reverent and still; responds to ceremonial motion and light",
    "cultural_notes": [
     "Considered omens of discovery before mining",
     "Presence may signal veins of hidden ore",
     "Mining guilds honor them with ritual pauses"
    ]
   },
   "siniath": {
    "local_name": "Wave Shades / Wailglints",
    "habitat": "Tidal caves, sea grottoes, and cliffs near sunken ruins",
    "traits": {
     "emotive_mimicry": "Drawn to grief and longing; appear during mourning or storms",
     "mirage_crafting": "Create phantoms of ships, lanterns, or the drowned",
     "tide_synchronization": "Glow increases with high tide or moonlight"
    },
    "temperament": "Mournful and distant; reflects sorrow like an echo",
    "cultural_notes": [
     "Feared as ill omens by sailors and widows",
     "Said to weep in one’s form when death is near",
     "Sometimes revered as fragments of drowned gods"
    ]
   }
  }
 },
 "tags": [],
 "relations": {},
 "sources": {},
 "timeline": {},
 "meta": {
  "status": "active",
  "notes": "Migrated from legacy repository structure."
 }
}