Starfinder: Hydrobot

Chris Van Deelen

Hydrobot Combatant CR 1/2 XP 200

Neutral medium construct

Init +3; Senses: Darkvision 60 ft., lowlight vision 60 ft.; Perception +4


Defense                                                             HP 13

EAC: 10 (14); KAC: 12 (16)

Fort: +0; Ref: +0; Will: -2

Immunities: construct, unliving



Speed: 40 ft. (swim), 10 ft. (land)

Melee: Pincer bite +6 (1d6+3 P Crit bleed 1d3)

Space: 5 ft., Reach: 5 ft.

Offensive Abilities: Leap



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

Skills: Athletics +9 (+14 swim), stealth +4 (+9)

Feats: Step up, step up and strike

Other Abilities: Aquatic

Languages: None



Environment: Any aquatic

Organization: Patrols (1d4), Squad patrols (2d4+3), Platoon Patrols (3d4+8), swarms (5d12+20)


Special Abilities

Aquatic (Ex): Having been created for work in aquatic conditions, these robots automatically gain a +5 bonus to athletics (swim), and Stealth. On top of this, the robots EAC and KAC are increased by +4 each. Out of water, the units lose this advantage.

Leap (Ex): The Hydrobot can lay in wait for a target to pass nearby. As long as the target passes within 30 feet, it can leap out of the water and attempt to smash into the target. When it does this, the Hydrobot gains a +2 to hit, and if a critical is achieved, the target not only takes bleed damage, but is knocked prone.


Originally conceived as worker-bots to be used in aquatic locations, Skynet took the concept and created these cheap (in resources) and easily produced robotic units to be used in waterways across the devastated globe. Knowing full well how organics need water to survive, these semi-autonomous units would be seeded in the water sources used by the survivors.

What makes the units incredibly insidious is that they could easily travel through man-made hydro systems, often used by the survivors. The robots are small enough to fit through most pipes, and could lay in wait for survivors to use kitchens, bathroom or any source in which plumbing was connected to the waterway in question.

When engaged in combat, the Hydrobots typically swarm a target in the water, ripping and tearing with its pincer-like front. Although long and relatively easy to dispatch, even with a handgun, large numbers of these robots can take out a group of resistance fighters relatively quickly and easily.

In water, they are fast and agile, but on land they are slow and clumsy. The robots will rarely attack targets on land, unless there are significant numbers to swarm the target, or there are only a handful of targets. They are smart enough to leave large groups alone, instead they will gather information and send it off to other Skynet units.

Starfinder Creature Index

Skynet Terminator, Hunter Killer and Weapons 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.