Aboleth

Aberration · 14 hexes · SM +3 Aboleth (Enraged Eggplant; answers SRD 3.5, SRD 5.1)

A hulking amphibious predator of lightless underground water, heavy through the body and smooth as an eel, with three stacked eyes and four long tentacles that it drags itself along on when it leaves the shallows. It thinks in inherited memory older than most civilisations, speaks mind to mind, and regards the surface and everyone on it as livestock.

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, Reach C.	11	thrust 1d cutting	C
TentacleTentacle (11): thrust 3d-1 crushing, Reach C-3.	11	thrust 3d-1 crushing	C-3
TailTail (11): thrust 4d-1 crushing, Reach C-2. Can only attack rear hexes. Cannot parry.	11	thrust 4d-1 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 (36)

• Ambidexterity
• Amphibious (Accessibility, Only skill penalties)
• Appearance (Hideous)
• Callous
• Dependency (Water; Constantly; Enters hibernation after losing 1xHP)
• 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

Tags

• srd-3-5
• srd-5-1
• aberration

GCS v5 downloads

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

Where this one came from

Source record

Aboleth

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/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.
• 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-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.