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Template Grafts | Universal Monster Rules

Swarm Gnawbore

Source Starfinder #24: The God-Host Ascends pg. 58

Swarm Gnawbore Tier 8

CE Large starship monstrous humanoid
Speed 8; Maneuverability average (turn 2); Drift 1
AC 23; TL 22
HP 190; DT —; CT 38
Shields medium 140 (forward 35, port 35, starboard 35, aft 35)
Attack (Forward) bite (8d10; see below), twin laser (5d8; 20 hexes)
Attack (Port) coilgun (4d4; 20 hexes)
Attack (Starboard) coilgun (4d4; 20 hexes)
Attack (Aft) flak thrower (3d4; 5 hexes)
Attack (Turret) high explosive missile launcher (4d8; 20 hexes)
Power Core Pulse Orange (250 PCU); Drift Engine Signal Basic; Systems budget medium-range sensors, crew quarters (common), mk 2 duonode computer, mk 6 armor, mk 6 defenses; Expansion Bays cargo bays (2), passenger seating (2)
Other Abilities fleet mind, living starship, void adaptation


Engineers (2 actions) Engineering +16 (8 ranks)
Gunners (3 actions) gunnery +15 (8th level)
Pilot (1 action) Piloting +18 (8 ranks)
Science Officer (1 action) Computers +16 (8 ranks)


Environment any vacuum
Organization solitary, pair, or drove (3–10)

Special Abilities

Bite (Ex) To use its bite attack against a target starship, a gnawbore must first succeed at a flyby stunt to move through the target’s hex. This attack, which has the ripper special property, is resolved with a normal gunnery check.
Fleet Mind (Ex) Like the individual Swarm components, Swarm starships are bound together into a singular hive mind through a blend of radio, quantum, and telepathic communication. All Swarm starships within 10 hexes of each other are in constant communication; if one is aware of a threat, all are. (Such awareness can spread along a “chain” of Swarm starships under appropriate circumstances, potentially alerting distant Swarm vessels.) Swarm vessels can also communicate telepathically with all Swarm creatures within 10 hexes.
Living Starship (Ex) A gnawbore is a colony of symbiotic creatures so immense that it functions as a starship (and thus engages only in starship combat). It has no true crew, but it can still take crew actions using the skill bonuses, ranks, and level listed in Crew Actions above. Modifiers for its size, speed, and maneuverability have already been factored into its statistics. Critical damage to life support instead damages the symbiotic brains, applying a penalty to pilot actions, in addition to any penalties from engines critical damage. Critical damage to the crew has no effect on a gnawbore, due to the redundancy of the symbiotic creatures that constitute it.


The Swarm gnawbore was designed by the hive mind to penetrate the hulls of enemy starships, spilling troops and supplies into space where their matter can be collected by other Swarm components at their leisure. Although the gnawbore carries conventional starship weaponry to incapacitate enemies from a distance, its most powerful weapon is its set of titanic mandibles. These gnashing appendages can tear through exposed starship hulls, so a gnawbore generally depletes its target’s shields with lasers and missiles before closing in like a voracious predator.

The Swarm often deploys several gnawbores at once against fleets of enemy starships. The panic and chaos they cause when they rip open a bulkhead is enough to break even the staunchest of armies.