Brain Ooze CR 7
Two slimy tentacles protrude from the sides of this brain-shaped mass of quivering ooze.
DEFENSE HP 100
EAC 20; KAC 21
Fort +8, Ref +6, Will +8
Defensive Abilities evasion, prescience; Immunities ooze immunities
Speed 5 ft., fly 60 ft. (Ex, good)
Melee tentacle +15 (1d10+7 E; critical neural pulse)
Spell-Like Abilities (CL 7th; ranged +15)
Neural Pulse (Su)
Whenever a brain ooze scores a critical hit against a creature, that creature must succeed on a DC 17 Fortitude save or suffer 2d4 points of Intelligence damage and be staggered for 1d6 rounds. Even on a successful saving throw, the creature suffers 1d2 points of Intelligence damage, and is staggered for 1 round. For every 2 points of Intelligence damage the brain ooze inflicts in this way, it gains 5 temporary hit points.
Ooze Immunities (Ex)
A brain ooze is immune to critical hits and precision-based damage, paralysis, poison, polymorph effects, sleep effects, and stunning. Brain oozes have no eyes and are immune to most sight-based effects. A brain ooze does not need to sleep.
Psychic Noise (Su)
The discordant psychic noise emitted by a brain ooze dazes nearby creatures for 1d4 rounds. When a creature begins its turn within the aura, it must succeed at a DC 17 Will save to negate this effect. Whether or not the save is successful, that creature cannot be affected again by the same brain ooze’s psychic noise for 24 hours. An affected creature may attempt a new saving to shake off the effect at the end of each of its turns. This is a mind-affecting effect.
Organization solitary, pair, flight (3–6), or colony (7–12)
A brain ooze (sometimes known as a “killer brain”) resembles almost precisely the raw brain of a human, save for the eldritch energy surrounding it and the twin tentacles extending from its sides.
The creature’s thought patterns are unusually powerful and cause painful mental feedback in the minds of other conscious beings. Other intelligent beings are nothing more than cattle and playthings to brain oozes—victims to be tormented, thought patterns to be consumed. Brain oozes prefer to manipulate their prey from the shadows. Rather than assaulting openly, they provoke fights and conflict within groups, or lure one or two victims away for the kill. Brain oozes derive particular satisfaction from forcing an individual to commit terrible acts, then wiping away all knowledge of the crimes from the victim’s memory. They torment such hapless puppets again and again, forcing them to commit ever greater atrocities.
Once weary of their sport they return the modified memories with dispel magic, and feast upon the delicious misery of the victim’s final despair.
Brain oozes feed through their tentacles by extracting the thoughts of living creatures.
Animals and less intelligent creatures provide little nourishment, but they prize fey, outsiders, and spellcasters as delicacies. After several feedings, a brain ooze divides into two nearly identical brains, each retaining only a portion of the knowledge and experiences of the parent.
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.