Outsider (Chaotic) · 2 hexes · SM +0 Chaos Beast [Monster Manual, page 33]
Attributes
ST15
DX10
IQ10
HT11
HP15
Will10
Per10
FP11
Basic Speed5.25
Basic Move4
Dodge8
DR2
Melee attacks
| Usage | Level | Damage | Reach |
|---|---|---|---|
| Sharp ClawsSharp Claws (12): thrust 1d+1 cutting (KYOS: 2d cutting), Reach C. If a living takes damage from the chaos beast’s claws, it must make a HT check to resist a transformative effect. Its body transforms into an amorphous mass for margin of failure minutes. Its Basic Move is reduced by 2, it gains Injury Tolerance (Homogenous, No Blood, No Head, No Neck), Invertebrate, Mute, No Legs (Slithers), and No Manipulators. It cannot wear any armor or use any items in this state - they all become useless and fall from the victim’s body. In addition, the victim constantly experiences terrible pain (p. B428). The victim can negate this effect and return to its natural form by taking a Concentrate maneuver a making a successful Will-4 roll. If successful, he retains his shape until the end of his next turn. | 12 | thrust 1d+1 cutting (KYOS: 2d cutting) | C |
Traits (12)
- Anarchic Touch
- Extra Attack 1
- Horizontal
- Immunity to Transformations
- Infravision
- Injury Tolerance (Homogenous, No Blood, No Head, No Neck)
- Invertebrate
- Magic Resistance 2 (Improved)
- No Fine Manipulators
- No Legs (Slithers)
- Unaging
- Vulnerability (Axiomatic Weapons, x2)
Skills (1)
- 12Brawling
Notes
- GCS ancestry draft: gcs/chaos-beast.gct
- Source template total: 101 points.
- Library-rebuilt template total: 101 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.
- GCS template includes a +76-point reconciliation child requiring decomposition.
- Size 2 hexes; Weight 200 lbs.
- Corporeal Instability (follow-up on Claws): Affliction 1 (HT; Accessibility, Only on living creatures, -10%; Advantage, Corporeal Instability, +120%; Follow-Up, Claws, +0%; Magical, -10%; Terrible Pain, +60%) [26]. Notes: “Corporeal Instability” is Alternate Form (Amorphous Mass; Magical, -10%; Nuisance Effect, Can be negated for a second via a Will-4 check, -10%) [12]. “Amorphous Mass” is a new meta-trait: Basic Move -2 [-10]; Injury Tolerance (Homogenous, No Blood, No Head, No Neck) [57]; Invertebrate [-20]; Mute [-25]; No Legs (Slithers) [0]; No Manipulators [-50]. Resolve as stated by the construction; the source gives no separate resolution text.
Encounter rating
CER16
Offense8
Protection8
Threat tierminor
Appearing4
Wandering4
Tags
- srd-3-5
- outsider
- chaotic
GCS v5 downloads
Where this one came from
- Source record
- Chaos Beast [Monster Manual, page 33]
- 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/chaos-beast.gct
- Source template total: 101 points.
- Library-rebuilt template total: 101 points.
- CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
- Issue #5: 2 special ability construction(s) restored (Corporeal Instability). No disabling construction on this record carries a cost the affliction term can score.
- GCS ancestry reconciliation adjudicated: the published template total is 101 points and the parsed source children sum to 25, a difference of +76. Classified as large grouped construction not decomposed — a large residual: this record's source entry groups a substantial block of abilities (typically spellcasting, breath weapons, or an alternative-ability set) into a single construction that the prose parser could not decompose. The author's published total is preserved and the residual stays visible as a reconciliation child rather than being silently absorbed. The authorized source total is preserved; the remaining manual step is opening gcs/chaos-beast.gct in GCS to replace the reconciliation child with native constructions where the grouped ability can be decomposed.
- CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 8, PR 8, CER 16, threat tier minor.
- Conversion baseline reported OR 9, PR 8, CER 17 (tier minor). 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 (default): average number appearing 4, wandering weight 4. 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-b2-gcs-reconciliation); GCS fidelity check passed, DOA playability check passed.
- The source-total difference is classified and documented in conversionNotes; the authorized published total is preserved and the residual stays visible as a reconciliation child.
- 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.