Animal · 1 hex · SM -5 Bat [Monsters on Automatic, SRD coverage: mundane birds, fish and aquatic animals; answers Bat (SRD 5.1); Bat (SRD 3.5)]
A hand-sized insect hunter that navigates a pitch-dark cavern by sound alone and never touches a wall doing it. One is harmless. A roost disturbed at dusk is a wall of them coming out at once, which is worth a Fright Check and nothing else.
Attributes
Melee attacks
| Usage | Level | Damage | Reach |
|---|---|---|---|
| BiteBite (14): 1d-7 cutting, Reach C. Barely a wound; the bat is a nuisance and a disease vector, not a threat. | 14 | 1d-7 cutting | C |
Traits (12)
- Acute Hearing 4
- Bestial
- Cannot Speak
- Flight (Winged)
- Fur
- Night Vision 5
- No Fine Manipulators
- Restricted Diet (Carnivore)
- Scanning Sense (Sonar)
- Sharp Teeth
- Short Lifespan 1
- Ultrahearing
Skills (2)
- 14Brawling
- 15Stealth
Notes
- GCS ancestry draft: gcs/bat.gct
- Independent build total: -101 points of racial traits plus 5 points of racial skills.
- Answers the SRD heading(s): Bat (SRD 5.1); Bat (SRD 3.5). Only the creature identity is taken from the SRD; the GURPS statistics, ratings and prose are this project's own work and reproduce no SRD text.
- Typical Stats, damage and ratings are derived from the racial template, not authored beside it, so the sheet and the stat block cannot disagree.
- Body mass used to scale this build: 0.03 kg. ST, Size Modifier and DR are checked against it; see the gurps-animal-sanity-check skill for the bands.
- Movement: ground Move 2; air Move 12 (primary). The published Move is the primary medium's cruising Move; sprint figures are stated here and not folded into it.
- Treasure and grappling are not authored for this batch and ship as explicit nulls; `lair` carries a short habitat note, because where a wandering animal dens is an encounter fact rather than a loot one.
- Longest dimension about 25 cm with the wings out, which is the published table's SM -5 row.
- ST is the floor: 30 g of animal carrying nothing but itself.
- Perception is only moderately raised. The bat's edge is not general alertness but one extraordinary sense, and Scanning Sense, Ultrahearing and Acute Hearing 4 are where that is paid for.
- Ground Move is deliberately crippled: a bat on the floor drags itself.
Encounter rating
Tags
- monsters-on-automatic
- ai-generated
- doa-authored
- srd-5-1
- srd-3-5
- animal
- mammal
- flier
- cave
- nocturnal
- wandering-encounter
GCS v5 downloads
Where this one came from
- Source record
- Bat [Monsters on Automatic, SRD coverage: mundane birds, fish and aquatic animals]
- Source system
- doa_fixture / doa_authored
- Released under
- cc_by_4_0
- Conversion
- 0.1.0-srd-independent-build
- Review status
- approved
- Credit
- Monster statistics, ratings and description prose by Monsters on Automatic; AI-generated first draft, project-reviewed, released under CC BY 4.0.
- Description
- Written by Dungeons on Automatic, released under cc_by_4_0
- Independently authored GURPS build. The SRD supplies the creature identity this record answers to and nothing else: no SRD statistics, wording or presentation is reproduced, and no third-party GURPS conversion was used as an input.
- Answers the SRD heading(s): Bat (SRD 5.1); Bat (SRD 3.5).
- Racial template: -101 points across 18 traits, plus 2 racial skill(s) worth 5 points.
- Every trait is drawn from the project's controlled GURPS vocabulary in scripts/srd/trait-library.mjs, which carries the page reference and published cost for each entry.
- sourceSystem is recorded as doa_fixture because that is the package contract's value for project-authored material; the SRD headings this record answers are in provenance.coversSourceIdentities.
- Ratings are recomputed through the consumer CER path on every build, so a mechanics change cannot leave a stale rating behind.
Copyright 2026 Monsters on Automatic. GURPS-compatible monster statistics, ratings and prose authored for this package as an AI-generated first draft under project review. No SRD text, and no third-party GURPS conversion, is reproduced. Portrait and tokens are AI-generated original art. Sources and credits.

