Behir - Dungeons on Automatic Bestiary

Magical Beast · 12 hexes · SM +5 Behir (Enraged Eggplant; answers SRD 3.5, SRD 5.1)

A serpentine bulk a dozen yards long in cobalt and bronze scale, running on twelve hooked legs that let it climb a cavern wall as easily as cross its floor. It can shed the legs and coil instead, crushing what it has wrapped, and it spits a bolt of lightning down a corridor when coiling is too slow.

Attributes

ST35

DX10

IQ9

HT13

HP35

Will11

Per11

FP17

Basic Speed6

Basic Move8

Dodge9

DR6

Melee attacks

Usage	Level	Damage	Reach
Sharp ClawsSharp Claws (12): thrust 5d-1 cutting, Reach C.	12	thrust 5d-1 cutting	C
Sharp TeethSharp Teeth (12): thrust 5d-1 cutting, Reach C.	12	thrust 5d-1 cutting	C
Breathe ElectricityBreathe Electricity (14): The behir breathes out a bolt of lightning, dealing thrust 1d+2 burning surge damage as large-area injury. Wearing any metal armor anywhere means having DR 1 against it, if that would be worse for the victim. Anyone wounded must make a HT roll at -1 per 2 HP of injury or be stunned, rolling against HT each turn thereafter to recover. This is a cone attack that uses rules from Area and Spreading Attacks (pp. B413-414). The cone is 1-yard wide and has a length of 7 yards (ST/5). Each use costs 2 FP. It is possible to make the cone wider by using the rules from Cones of Power (GURPS Dungeon Fantasy Monsters 4: Dragons, p. 10).	14	The behir breathes out a bolt of lightning, dealing thrust 1d+2 burning surge damage as large-area injury. Wearing any metal armor anywhere means having DR 1 against it, if that would be worse for the victim. Anyone wounded must make a HT roll at -1 per 2 HP of injury or be stunned, rolling against HT each turn thereafter to recover. This is a cone attack that uses rules from Area and Spreading Attacks (pp. B413-414). The cone is 1-yard wide and has a length of 7 yards (ST/5). Each use costs 2 FP. It is possible to make the cone wider by using the rules from Cones of Power (GURPS Dungeon Fantasy Monsters 4: Dragons, p. 10)	—

Traits (23)

Bad Grip 2
Constriction Attack
Discriminatory Smell
Double-Jointed
Early Maturation 7
Extended Lifespan 4
Extra Legs (Twelve Legs)
Ham-Fisted 1
High Pain Threshold
Horizontal
Immunity to Electrical Conduction
Immunity to Noxious Electric Effects
Infravision
Intolerance (Dragons)
Loner (12) [-5]
Nictitating Membrane 3
Night Vision 5
Peripheral Vision
Reduced Consumption 3
Restricted Diet (Carnivore)
Scales
Short Arms
Super Climbing 2

Skills (4)

12Brawling
14Innate Attack (Breath)
12Tracking
12Wrestling

Notes

GCS ancestry draft: gcs/behir.gct
Source template total: 369 points.
Library-rebuilt template total: 373 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.
Exact GCS library matches change the template by +4 point(s).
Size 12 hexes.

Encounter rating

CER75

Offense36

Protection39

Threat tiermajor

Appearing1

Wandering2

GCS v5 downloads

Where this one came from

Source record: Behir
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/behir.gct
Source template total: 369 points.
Library-rebuilt template total: 373 points.
CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
GCS cost adjudication for "FP+4": the source states 8 points and the native GCS library computes 12. Adopted the native library value of 12. Extra Fatigue Points are 3 per point (B16), so FP+4 is 12. The stated 8 prices at 2 per point.
CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 36, PR 39, CER 75, threat tier major.
Conversion baseline reported OR 37, PR 39, CER 76 (tier major). 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 (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.
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-b1-gcs-costs); GCS fidelity check passed, DOA playability check passed.
Every exact-identity cost discrepancy on this record is adjudicated against the published GURPS cost table in review/reports/gcs-adjudication.md; the adopted value and its basis are recorded in conversionNotes.
Visual GCS verification of the .gct is not claimed by this decision; checks.gcsVisualPass is false.

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.