Vermin · SM +4 Monstrous Centipede (Colossal) [Monster Manual, page 286]
Attributes
ST48
DX10
IQ1
HT13
HP48
Will8
Per8
FP13
Basic Speed5.25
Basic Move5
Dodge8
DR7
Melee attacks
| Usage | Level | Damage | Reach |
|---|---|---|---|
| MandiblesMandibles (14): thrust 6d cutting (KYOS: 8d+2 cutting) plus follow-up 1d toxic (6 1-hour cycles, resisted by HT-3, -5 DX after loss of 2/3 HP), Reach C. | 14 | thrust 6d cutting (KYOS: 8d+2 cutting) plus follow-up 1d toxic (6 1-hour cycles, resisted by HT-3, -5 DX after loss of 2/3 HP) | C |
Traits (16)
- Acute Thermal Infrared Vision 4
- Blindness
- Clinging
- Cold-Blooded (50°)
- Double-Jointed
- Infravision
- Horizontal
- 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 (3)
- 14Brawling
- 12Stealth
- 12Tracking
Notes
- GCS ancestry draft: gcs/monstrous-centipede-colossal.gct
- Source template total: -64 points.
- Library-rebuilt template total: -64 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 (Cyclic, 1 hour, 6 cycles, Resistible, +60%; Follow-Up, Bite, +0%; Resistible, HT-3, -15%; Symptoms, 2/3 HP, -5 DX, +50%) Resolve as stated by the construction; the source gives no separate resolution text.
Encounter rating
CER84
Offense38
Protection46
Threat tiermajor
Appearing1
Wandering2
Tags
- srd-3-5
- vermin
GCS v5 downloads
Where this one came from
- Source record
- Monstrous Centipede (Colossal) [Monster Manual, page 286]
- 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/monstrous-centipede-colossal.gct
- Source template total: -64 points.
- Library-rebuilt template total: -64 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 38, PR 46, CER 84, threat tier major.
- Encounter metadata derived (gregarious): average number appearing 1, wandering weight 2. 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.