Ankheg - Dungeons on Automatic Bestiary

Animal · 4 hexes · SM +2 Ankheg (Enraged Eggplant; answers SRD 3.5, SRD 5.1)

A six-legged burrowing arthropod as heavy as a pony, with shovel-like foreclaws and mandibles that run with digestive acid. Nearly blind and completely deaf, it hunts by the tremor of footsteps overhead, erupting out of tilled soil to seize whatever is passing and drag it under.

Attributes

ST18

DX10

IQ2

HT13

HP20

Will9

Per11

FP13

Basic Speed5.75

Basic Move8

Dodge8

DR4

Melee attacks

Usage	Level	Damage	Reach
Acidic BiteAcidic Bite (12): thrust 1d+2 cutting + follow-up 1d-1 corrosion. Reach C. The follow-up corrosion damage is not applied if the ankheg’s Spit Acid ability is recharging.	12	thrust 1d+2 cutting + follow-up 1d-1 corrosion	C
Sharp ClawsSharp Claws (12): thrust 1d+2 cutting. Reach C-1.	12	thrust 1d+2 cutting	C-1
Spit AcidSpit Acid (14): 2d corrosion. Ranged attack (Acc 3, Range 20). Double the actual distance to the target when calculating the range modifier due to the ankheg being nearsighted. Costs 1 FP, takes 1 hour to recharge between two consecutive uses. Can be blocked and dodged, but not parried. While this ability is recharging, the ankheg does not deal follow-up corrosion damage with its bite attack.	14	2d corrosion. Ranged attack (Acc 3, Range 20). Double the actual distance to the target when calculating the range modifier due to the ankheg being nearsighted. Costs 1 FP, takes 1 hour to recharge between two consecutive uses. Can be blocked and dodged, but not parried. While this ability is recharging, the ankheg does not deal follow-up corrosion damage with its bite attack	—

Traits (16)

Ambidexterity
Bad Sight (Nearsighted)
Cold-Blooded (50°)
Deafness
Extra Legs (Six Legs)
Likes meat
Metabolism Control 3 (Winter; Hibernation)
No Fine Manipulators
Reduced Consumption 2 (Accessibility, Must spend at least half a day in soil)
Reduced Consumption 2 (Cast-Iron Stomach)
Short Lifespan 3
Subsonic Hearing (Biological (Passive); Melee Attack, Reach C)
Tunneling (Move 4)
Ultravision
Vibration Sense (Air; Biological (Passive))
Wild Animal (with Mute)

Skills (2)

14Brawling
14Innate Attack (Breath)

Notes

GCS ancestry draft: gcs/ankheg.gct
Source template total: -24 points.
Library-rebuilt template total: -24 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 4 hexes; Weight 800 lbs.

Encounter rating

CER39

Offense23

Protection16

Threat tierstandard

Appearing2

Wandering3

GCS v5 downloads

Where this one came from

Source record: Ankheg
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/ankheg.gct
Source template total: -24 points.
Library-rebuilt template total: -24 points.
CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 23, PR 16, CER 39, threat tier standard.
Encounter metadata derived (gregarious): average number appearing 2, 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.
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-b7-ordinary); GCS fidelity check passed, DOA playability check passed.
No exception flag: ancestry totals reconcile, stats parsed completely, ratings match the consumer CER path, and mechanics are runnable as written.

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.