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Doppelganger

Monstrous Humanoid (Shapechanger) · minor threat

Doppelganger bestiary portrait
Doppelganger top-down encounter tokenDoppelganger top-down flat-top hex token

Monstrous Humanoid (Shapechanger) · SM +0 Doppelganger [Monster Manual, page 67]

Attributes

ST11
DX11
IQ11
HT11
HP11
Will11
Per11
FP11
Basic Speed5.5
Basic Move5
Dodge8
DR1

Melee attacks

UsageLevelDamageReach
PunchPunch (13): 1d-1 crushing, Reach C.131d-1 crushingC

Traits (5)

  • Infravision
  • Mind Reading (Magical)
  • Resistant to Mind Control (+8)
  • Infravision
  • Smooth Operator 3

Skills (5)

  • 18Acting
  • 13Brawling
  • 15Diplomacy
  • 15Fast-Talk
  • 15Sex Appeal

Notes

  • GCS ancestry draft: gcs/doppelganger.gct
  • Source template total: 175 points.
  • Library-rebuilt template total: 175 points.
  • CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
  • Review attacks, special abilities, encounter frequency, treasure, grappling, and GCS modifiers before approval.

Encounter rating

CER10
Offense6
Protection4
Threat tierminor
Appearing6
Wandering4

Tags

  • srd-3-5
  • srd-5-1
  • monstrous-humanoid
  • shapechanger

GCS v5 downloads

Where this one came from
Source record
Doppelganger [Monster Manual, page 67]
Source system
gurps_4e_fan_conversion / author_permission
Released under
cc_by_4_0
Conversion
0.2.0-reviewed
Review status
approved
Credit
Original GURPS conversion by Enraged Eggplant, from Monsters (May 11, 2024); adapted and republished with permission.
  • GCS ancestry draft: gcs/doppelganger.gct
  • Source template total: 175 points.
  • Library-rebuilt template total: 175 points.
  • CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
  • CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 6, PR 4, CER 10, threat tier minor.
  • Encounter metadata derived (gregarious): average number appearing 6, wandering weight 4. Encounter metadata derived for 0.2.0 from the reviewed threat tier and creature class (appearing: minor 4 / standard 2 / major 1 / severe 1, forced to 1 for solitary classes — including swarms, which are a single multi-body creature — and raised to 6 for gregarious minor creatures; wandering weight: minor 4 / standard 3 / major 2 / severe 1). The fan-conversion source states no appearing-in-numbers or wandering values, so these are derived, not source mechanics.
  • Lair, treasure, and grappling remain unpopulated in 0.2.0 by package policy: the authorized fan-conversion source states no lair, treasure, or grappling values, and review declines to invent them. See review/policy/0.2.0-empty-field-policy.md.
  • Review approved by automated-mechanical-review on 2026-07-26 (batch ee-2026-07-26-b4-special-mechanics); GCS fidelity check passed, DOA playability check passed.
  • Special-mechanics record. Mechanics the CER path cannot price are named per record in review/reports/cer-audit.md rather than folded into the number, and encounter counts are capped where a save-or-disable attack is present.

Enraged Eggplant GURPS monster conversions; used, adapted, and republished with unrestricted permission from the author. Portrait and tokens are AI-generated original art. Sources and credits.