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Robot, Arachnid

Arachnid Robot CR 1/2

This dog-sized, spider-like robot has a plasma torch mounted on a stinger-like limb and gripping claws on its forelegs.

XP 200
N Small construct (technological)
Init +3; Senses darkvision 60 ft., low-light vision; Perception +4


EAC 10; KAC 11
Fort –2, Ref –2, Will +1
Immunities construct immunities; Resistances fire 5
Weaknesses fragile, vulnerable to critical hits, vulnerable to electricity


Speed 40 ft., climb 20 ft.
Melee claws +3 (1d4–1 S)
Ranged plasma torch +5 (1d4 E & F)
Offensive Abilities explode, plasma torch (15-ft. cone; 1d4 E & F; DC 11)


Str –1, Dex +3, Con —, Int +1, Wis +2, Cha –5
Skills Athletics +4, Engineering +9, Stealth +9
Languages Common, Jagladine, Ultari


Explode (Ex)

If an arachnid robot is destroyed or takes damage while below half its maximum Hit Points, it must attempt a Fortitude saving throw with a DC equal to the amount of damage taken. If it fails, the robot explodes, dealing 2d4 fire and electricity damage to all creatures in a 10-foot-radius burst (Reflex DC 11 half). This destroys the robot.

Fragile (Ex)

When badly damaged, arachnid robots function poorly. An arachnid robot reduced to fewer than half its maximum Hit Points is staggered and moves at half speed. Further damage may cause the robot to explode.

Plasma Torch (Ex)

An arachnid robot can use its arm-mounted plasma torch in two ways. It can use the torch to make a ranged against a target within 15 feet, or it can emit a 15-foot cone of plasma, dealing 1d4 fire and electricity damage to all targets in the area of effect (Reflex DC 11 half). The robot’s plasma torch requires 1 full round to recharge between uses.


Ubiquitous pets of technologists, arachnid robots also serve as sentinels and spies. Arachnid robots come equipped with a plasma welding torch that resembles a scorpion’s tail stinger and doubles as a weapon. Under stress, an arachnid robot’s plasma core can overload, destroying the robot in a fiery blast. This tendency inspired the practice of using the robots as suicide drones.

An arachnid robot is intelligent enough to have a sense of self-preservation, however, and one can be made to undertake such a mission only through trickery.

Despite their scorpion-like appearance, arachnid robots’ ability to use their claws as an additional pair of legs when climbing or moving quickly has earned the robots the name “spiderbots.”

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.