Aboleth - Dungeons on Automatic Bestiary

Aberration · 14 hexes · SM +3 Aboleth [Monster Manual, page 8, Expanded Psionics Handbook, page 185]

Attributes

ST30

DX11

IQ15

HT13

HP37

Will15

Per10

FP18

Basic Speed6

Basic Move1

Dodge9

DR3

Melee attacks

Usage	Level	Damage	Reach
Sharp TeethSharp Teeth (11): thrust 1d cutting (KYOS: 2d+2 cutting), Reach C.	11	thrust 1d cutting (KYOS: 2d+2 cutting)	C
TentacleTentacle (11): thrust 3d-1 crushing (KYOS: 5d+1 crushing), Reach C-3.	11	thrust 3d-1 crushing (KYOS: 5d+1 crushing)	C-3
TailTail (11): thrust 4d-1 crushing (KYOS: 7d crushing), Reach C-2. Can only attack rear hexes. Cannot parry.	11	thrust 4d-1 crushing (KYOS: 7d crushing)	C-2
Mucus CloudWhen underwater, the aboleth exudes a mucus cloud. Any creature in the same hex as the aboleth that breathes in the mucus must make a successful HT roll or lose the ability to breathe air and gain that ability to breathe water for 30 minutes times the margin of failure.	—	—	C

Traits (35)

Ambidexterity
Amphibious (Accessibility, Only skill penalties)
Appearance (Hideous)
Callous
Doesn’t Breathe
Double-Jointed
Enhanced Move 0.5 (Water)
Extra Attack 1
Extra Legs (Four Legs; Cannot Kick; Extra-Flexible; Long 1)
Extra-Flexible Long (+1 SM) Arms
Extra-Flexible Long (+1 SM) Foot Manipulators 2
Horizontal
Infravision
Injury Tolerance (No Neck)
Intolerance (Land dwellers)
Likes eating victims transformed by slime
Nictitating Membrane 2
No Legs (Semi-Aquatic)
No Sense of Humor
Odious Racial Habit (Eats sapient beings)
Plankton Strainer
Pressure Support 3
Racial Memory (Active; Immersive)
Reduced Consumption 4 (Food Only)
Restricted Diet (Carnivore)
Sharp Teeth
Slippery 3
Social Stigma (Monster)
Speak Underwater
Telepathy Talent 2
Temperature Tolerance 3 (Cold)
Three Eyes
Two Hearts
Unaging
Weakness (Immersion in saline water, 1d per 30 minutes)

Skills (13)

16Brainwashing/TL3
16Expert Skill (Psionics)
16Interrogation
16Intimidation
16Research/TL3
16Thaumatology
15Mental Blow
15Mental Surgery
15Mind Shield
15Suggestion
15Telecontrol
15Telereceive
15Telesend

Notes

GCS ancestry draft: gcs/aboleth.gct
Source template total: 779 points.
Library-rebuilt template total: 779 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.
Size 14 hexes; Weight 6,500 lbs.

Encounter rating

CER65

Offense25

Protection40

Threat tiermajor

Appearing1

Wandering2

GCS v5 downloads

Where this one came from

Source record: Aboleth [Monster Manual, page 8, Expanded Psionics Handbook, page 185]
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/aboleth.gct
Source template total: 779 points.
Library-rebuilt template total: 779 points.
CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
Issue #5: 1 special ability construction(s) restored (Mucus Cloud). 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 25, PR 40, CER 65, threat tier major.
Conversion baseline reported OR 17, PR 40, CER 57 (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 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.