Starfinder: Guardian Arachnid

Chris Van Deelen

Guardian Arachnid Combatant CR 10 XP 9,600

Neutral large vermin

Init +3; Senses: Darkvision 60 ft.; Perception +19


Defense                                                             HP 165

EAC: 23; KAC: 28

Fort: +14 (+24); Ref: +12; Will: +9

Defensive Abilities: DR 10 / -, hardened survivor, savage defense; Immunities: Poison, radiation



Speed: 50 feet, burrow 20 feet

Melee: 2 claws +18 (2d12+20  S Crit Bleed 2d4 and wound), or bite +22 (2d8+20 P)

Space: 10 ft., Reach: 10 ft.

Offensive Abilities: Berserker



Str +10; Dex +3; Con +3; Int -; Wis +0; Cha +0

Skills: Acrobatics +19, athletics +24, intimidate +19

Feats: penetrating attack, step up and strike

Languages: None



Environment: Any

Organization: Pairs, or small groups (1d4+2)


Special Abilities

Berserker (Ex): As soon as the Guardian has sustained at least 50% of its hit points in damage, it will go into a berserker rage. During this rage, the arachnid will gain +2 to hit, the damage inflicted will increase by +2 per dice damage, and it will gain an additional 40 hit points, and it will be able to use all three melee attacks at the same time. Because it will attack so ferociously, its EAC and KAC are both reduced by 4 points. This berserker rage will last for 2d4+4 rounds, or until the Guardian is killed. Even if all enemies are destroyed, it will continue to attack anything nearby, including other arachnids – except Queens, overseers and Thinkers. Any of these Arachnids will be able to ‘turn off’ the berserker mode. Once the berserker mode ends, the temporary hit points will disappear. If this drops the arachnid below zero hit points, it will die on the beginning of the next round.

Hardened Survivor (Ex): The Guardian 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.

Savage Defense (Ex): The Guardian was specially bred to be able to defend against all manner of attacks. As such, when it is engaged in combat against targets that would normally not get an attack of opportunity due to a class feature or special ability, the Guardian ignores this and will still gain the attack of opportunity.


Considered to be the next step in the Arachnid army, the Guardian is larger and far fiercer than even the warrior arachnid. The issue is that they are so savage they often will attack other Arachnids if they are driven into a berserker fury due to sustained damage – or if triggered by Thinker or other similar Arachnids.

Unlike Warriors, these arachnids have black carapaces, with red on the tips of the claws and a stripe down the main mandible. The legs and arms are tanned colored. The carapaces are far thicker than that of the other Arachnids, and as such are able to absorb far more punishment, allowing the creatures to typically close in with the enemy and rip into them.

They are known as guardians, as whenever a Thinker or other such Arachnid is present, these creatures will always be within easy reach. They will defend the Thinker, Queen or Overseer ferociously, automatically going into the berserker mode. While in the presence of these types of Arachnids, there is no limit on how long they can remain in this attack mode.

As the war against the Arachnids continues to grow and expand, more of these creatures are being encountered on the battlefield, much to the consternation of those races engaged in the genocidal war against these creatures.

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.