Monstrous Centipede (Medium)

Vermin · SM +0 Monstrous Centipede (Medium) (Enraged Eggplant; answers SRD 3.5)

A thick blue-black crawler banded in copper, about as long as a man is tall, plated along its whole length and clinging to surfaces at any angle. It sees nothing at all and needs to see nothing: it follows the heat of a body, and its ivory mandibles close hard enough to reach bone.

Attributes

ST9

DX10

IQ1

HT11

HP9

Will8

Per8

FP11

Basic Speed5.25

Basic Move5

Dodge8

DR1

Melee attacks

Usage	Level	Damage	Reach
MandiblesMandibles (10): thrust 1d-3 cutting plus follow-up 1d-1 toxic (4 1-hour cycles, resisted by HT, -2 DX after loss of 2/3 HP), Reach C.	10	thrust 1d-3 cutting plus follow-up 1d-1 toxic (4 1-hour cycles, resisted by HT, -2 DX after loss of 2/3 HP)	C

Traits (17)

• Acute Thermal Infrared Vision 4
• Blindness
• Clinging
• Cold-Blooded (50°)
• Double-Jointed
• High Pain Threshold
• Horizontal
• Infravision
• Injury Tolerance (No Brain, No Eyes, No Neck, No Vitals)
• No Legs (Slithers)
• No Manipulators
• Reduced Consumption 3 (Cast Iron Stomach)
• Restricted Diet (Carnivore)
• Short Lifespan 3
• Slippery 3
• Thermal Infrared Vision (Biological (Passive); Short-Range 1)
• Wild Animal with Mute

Skills (2)

• 12Stealth
• 12Tracking

Notes

• GCS ancestry draft: gcs/monstrous-centipede-medium.gct
• Source template total: -204 points.
• Library-rebuilt template total: -204 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.
• Poison (follow-up on Bite): Toxic Attack 1d-1 (Cyclic, 1 hour, 4 cycles, Resistible, +40%; Follow-Up, Bite, +0%; Resistible, HT, -30%; Symptoms, 2/3 HP, -2 DX, +20%) Resolve as stated by the construction; the source gives no separate resolution text.

Encounter rating

CER2

Offense1

Protection1

Threat tierminor

Appearing6

Wandering4

Tags

• srd-3-5
• vermin

GCS v5 downloads

• ↓ Character sheet (.gcs)Open directly in GCS
• ↓ Ancestry template (.gct)Apply to any character

Where this one came from

Source record

Monstrous Centipede (Medium)

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.

Description

Written by Dungeons on Automatic, released under cc_by_4_0

• GCS ancestry draft: gcs/monstrous-centipede-medium.gct
• Source template total: -204 points.
• Library-rebuilt template total: -204 points.
• CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
• Issue #5: 2 special ability construction(s) restored (Poison). No disabling construction on this record carries a cost the affliction term can score.
• CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 1, PR 1, CER 2, threat tier minor.
• Conversion baseline reported OR 2, PR -1, CER 1 (tier minor). The reviewed values come from the consumer CER implementation, which rounds damage once after the damage-type multiplier and credits ranged accuracy; the conversion baseline ceilinged the damage base first and ignored range.
• 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.
• Description text is original Dungeons on Automatic prose written from this record's own converted statistics and from the project's art direction for the creature. It is not derived from the authorized fan-conversion source, which states no creature descriptions, and not from any SRD. It carries its own authorship and CC BY 4.0 terms in the description field. See review/policy/description-policy.md.
• Review approved by automated-mechanical-review on 2026-07-26 (batch ee-2026-07-26-b3-cer-tails); GCS fidelity check passed, DOA playability check passed.
• CER tail record. The rating was recomputed through the consumer CER path and the tail was read against package peers in review/reports/cer-audit.md; a floor of 1 reflects a genuinely feeble creature and a severe rating tracks the record's own HP, DR and damage.