Starfinder: Chooser Arachnid

Chris Van Deelen

Chooser Arachnid Expert CR 2 XP 600

Neutral large vermin

Init +1; Senses: Darkvision 60 ft; Perception +12


Defense                                                             HP 23

EAC: 13; KAC: 14

Fort: +3 (+13); Ref: +1; Will: +5

Defensive Abilities: DR 2 / - , fear pheromones, hardened survivor; Immunities: Poison, radiation



Speed: 20 feet

Melee: Bite +8 (1d6+6 P) or claw +8 (1d4+6 S Crit bleed 1d3)

Space: 10 ft., Reach: 10 ft.



Str +4; Dex +1; Con +2; Int -; Wis +0; Cha +0

Skills: athletics +12, life sciences +7, stealth +7, survival +12

Other Abilities: Enrage

Languages: None



Environment: Any

Organization: Solitary, small group (1d4+1)


Special Abilities

Enrage (Ex): As a full action, the Chooser can release specialized pheromones. These will cause any Arachnids within a 100 ft. radius to become enraged. As such, they will gain a +2 to hit, +2 damage to all attacks, and suffer a -2 to AC. This ability will last for a full minute, even if the chooser is killed. This will not stack with the Pheromones of other choosers, however once the duration has run out, another chooser can release it as well, effectively increasing the duration. The Chooser can use this ability once every 24 hours.

Fear Pheromones (Ex): As a move action, the Chooser can release a powerful pheromone into the air around it. This has an area of effect of 30 feet and anything caught must make a Fort save (DC 13) or suffer the effects of the fear condition. This will last as long as the victim is in the area of effect, or once they are out of the area, for 2d4 rounds. The creature can use this at will.

Hardened Survivor (Ex): The Chooser is completely immune to poisons and radiation, and it is able to withstand extreme conditions, even utter vacuum. Whenever the beast must make a saving Fortitude saving throw when dealing with environmental conditions, it gains a +10.


The chooser is a specialized type of Arachnid. This creature takes the eggs laid by the breeder and injects the genetic material into the essentially empty ‘template’, choosing what type of Arachnid the egg will end up producing. This ability is directed by the Thinkers, unless none are available. If that is the case, they will almost exclusively cause the eggs to produce warriors, although if the thinker is dead, their priority will be to produce more.

The Chooser is large, standing about 10 feet in length, and although it looks ferocious, it is quite cowardly. As with the breeders, the thinker relies entirely upon the Warriors and other types of Arachnids to protect it, the breeders and eggs. If encountered, unless it is cornered, the chooser will always flee, but not before releasing a specialized pheromone. When breathed in, the chemical stimulates the fear center in the being’s brain, causing it to become terrified before finally fleeing in panic.

Furthermore, the chooser is fully capable of releasing another chemical concoction into the air, and this one will increase the aggressiveness of all non-chooser and breeder arachnids, putting them into a deadly frenzy. This does not last long, but typically long enough for the arachnids to deal with any interlopers who dared enter the nest.

Starfinder Creature Index

Chris Van Deelen is the creator and contributor to over half of the Wisdom from the Wastelands series, contributor to the Swords of Kos: Hekaton anthology, and the recently released 'Swords of Kos: The Rite'. He also wrote Creatures of the Tropical Wastelands, and 100 Oddities found in a Car. As prolific as he is, Chris Van Deelen continues to write and produce material which will be in publication soon. Not only is he a prolific content creator, he also has a wide selection of fiction and stories! If you like his work, please follow his personal author page on Facebook and on Twitter to keep up with his latest news and game content.