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Fleshworm Swarm CR 5

This nauseating carpet of wriggling white grubs undulates outward in a pallid wave of hunger.

XP 1,600
N Fine vermin (swarm)
Init +3; Senses darkvision 60 ft.; Perception +0


EAC 17; KAC 19
Fort +9, Ref +7, Will +4
Defensive Abilities swarm defenses; Immunities swarm immunities


Speed 10 ft.
Melee swarm attack (1d8+5 plus infestation)
Space 10 ft.; Reach 0 ft.
Offensive Abilities distraction


Str –5, Dex +3, Con +5, Int —, Wis +0, Cha –5
Other Abilities mindless


Infestation (Ex)

Any living creature that takes damage from a fleshworm swarm must attempt a DC 13 Reflex save to avoid becoming infested. An infested creature takes 1d4 Constitution damage per round as the fleshworms burrow through and consume its flesh—this effect continues as long as the victim remains in the swarm and continues for 1d6 rounds after it leaves the swarm.

Any energy-based attack (including damage from negative energy) that deals at least 5 of damage to the victim automatically destroys all of the fleshworms infesting it, ending the effect prematurely. Additionally, any effect that removes disease instantly ends a fleshworm infestation, though immunity to disease offers no defense.


Environment any
Organization solitary

Fleshworms are foul, nauseating parasites that feed on flesh and use corpses as nests in which to grow. While fleshworms can derive nourishment from dead flesh, their true hunger is for the flesh of the living. Thankfully, these swarms occur only rarely, as they require the infested carcass of a Huge or larger creature and many weeks to build up the numbers necessary to constitute a swarm.

Section 15: Copyright Notice

Alien Bestiary (Starfinder) © 2018, Legendary Games; Lead Designer: Jason Nelson. Authors: Anthony Adam, Kate Baker, John Bennet, Eytan Bernstein, Robert Brookes, Russ Brown, Duan Byrd, Jeff Dahl, Robyn Fields, Joel Flank, Matt Goodall, Robert J. Grady, Jim Groves, Steven T. Helt, Thurston Hillman, Tim Hitchcock, Nick Hite, Daniel Hunt, Mike Kimmel Marshall, Isabelle Lee, Jeff Lee, Lyz Liddell, Jason Nelson, Richard Pett, Tom Phillips, Alistair J. Rigg, Alex Riggs, Wendall Roy, Mike Shel, Neil Spicer, Todd Stewart, Russ Taylor, Rachel Ventura, Mike Welham, George Loki Williams, Scott Young.