Archives of Nethys

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Template Grafts | Universal Monster Rules


Source Starfinder #39: The Gilded Cage pg. 57

Spewer CR 10

XP 9,600
N Medium undead
Init +5; Senses darkvision 60 ft.; Perception +19


HP 170
EAC 20; KAC 22
Fort +13; Ref +13; Will +9
Defensive Abilities pustule explosion (10 A) Immunities undead immunities; Immunities undead immunities; Resistances acid 10
Weaknesses vulnerable to electricity


Speed 40 ft., climb 30 ft.
Melee slam +22 (2d10+18 B)
Ranged chemical spitball +19 (2d10+10 A)
Offensive Abilities breath weapon (30-ft. cone, 11d6 A plus sickened, DC 18, usable every 1d4 rounds)


STR +8; DEX +5; CON —; INT —; WIS +2; CHA +1
Skills Athletics +19 (+27 to climb)
Other Abilities mindless, unliving


Environment any
Organization solitary, pair, or retch (3–6)

Special Abilities

Breath Weapon (Ex) A creature that fails its saving throw against a spewer’s breath weapon is also sickened for 1 round.
Chemical Spitball (Ex) As a ranged attack, a spewer can discharge a glob of acid with a range increment of 30 feet.
Pustule Explosion (Ex) When a spewer is struck by an attack that deals bludgeoning, piercing, or slashing damage, all creatures within 5 feet take 10 acid damage.


A spewer is an undead corpse coursing with chemicals that form bulging pustules on the surface of its skin. The cause of this undead’s physiology is in fact its animating force: implanted hybrid augmentations that have taken over the recipient’s body upon their death. The chemicals that course through a spewer’s body allows it to convert just about any material into more fuel for its implants. The undead can disgorge a concentrated glob of this chemical acid or shower its prey in a torrent of the vile substance. Witnessing a spewer dislodge a wave of vomit only to then eat the remains of its bile-covered victim is a sight few recover from. Should a spewer be unable to feed, it falls into a kind of torpor until it is disturbed; those who create spewers use this quirk as a means to control them.

Most scholars believe the first spewers arose from individuals who perished while testing experimental biotech. According to records, nefarious necromancers have devised processes of purposefully creating spewers to use as shock troops or unsubtle assassins.

Extra Content

The following extra content was found for this creature:
- Spewer (Other) Graft Template