Chuul - Dungeons on Automatic Bestiary

Aberration · SM +1 Chuul [Monster Manual, page 35]

Attributes

ST19

DX10

IQ9

HT12

HP19

Will10

Per10

FP12

Basic Speed5.5

Basic Move5

Dodge8

DR5

Melee attacks

Usage	Level	Damage	Reach
PincersPincers (12): thrust 2d+2 cutting (KYOS: 4d-1 cutting), Reach C-1. The chuul can either nip and let go or hold on and grapple the victim in addition to injuring him. Either is an attack that takes full hit location penalties – not halved for grappling. Treat this attack as a bite for these purposes (see Teeth on page 115 of GURPS Martial Arts for details). The pincers give +2 with tasks that require a firm grip (including climbing).	12	thrust 2d+2 cutting (KYOS: 4d-1 cutting)	C-1
Weak BiteWeak Bite (12): thrust 1d+2 crushing, Reach C.	12	thrust 1d+2 crushing	C
Paralytic TentaclesParalytic Tentacles (11): A chuul can lash out with its tentacles to paralyze his victim. This attack has Reach C and cannot parry. If the tentacle touches bare skin, the victim must roll HT to resist. He becomes paralyzed for 3 seconds per point of margin of failure. After that the subject is stunned (p. B420) and may roll vs. HT once per second to recover.	11	A chuul can lash out with its tentacles to paralyze his victim. This attack has Reach C and cannot parry. If the tentacle touches bare skin, the victim must roll HT to resist. He becomes paralyzed for 3 seconds per point of margin of failure. After that the subject is stunned (p. B420) and may roll vs. HT once per second to recover	C and cannot parry

Traits (14)

Appearance (Hideous)
Blindness
Doesn’t Breathe (Gills)
Extra Legs (Four Legs)
Immunity to Poison
Injury Tolerance (No Eyes)
No Fine Manipulators
Para-Radar (Magical)
Pressure Support 1
Reduced Consumption 2
Restricted Diet (Carnivore)
Revulsion (Brains)
Social Stigma (Monster)
Weak Bite

Skills (2)

12Brawling
14Tracking

Notes

GCS ancestry draft: gcs/chuul.gct
Source template total: 122 points.
Library-rebuilt template total: 122 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

CER37

Offense21

Protection16

Threat tierstandard

Appearing1

Wandering3

GCS v5 downloads

Where this one came from

Source record: Chuul [Monster Manual, page 35]
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/chuul.gct
Source template total: 122 points.
Library-rebuilt template total: 122 points.
CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
Issue #5: 0 special ability construction(s) restored and 1 annotated with the source's stated cost. 1 save-or-disable construction(s) are scored through the affliction term at the source's stated point cost, or at Binding ST where the source builds the ability as a Binding.
CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 21, PR 16, CER 37, threat tier standard.
Conversion baseline reported OR 17, PR 16, CER 33 (tier standard). 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 (solitary): average number appearing 1, wandering weight 3. 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.