Cranial Dissectibot

Cranial Dissectibot CR 5

XP 1,600
NE Medium construct
Init +1; Senses darkvision 60 ft., low-light vision; Perception +5


AC 17, touch 11, flat-footed 16 (+1 Dex, +6 natural)
hp 58 (7d10+20)
Fort +2, Ref +3, Will +2
Defensive Abilities hardness 10; Immune mind-affecting, construct traits


Speed 10 ft.
Melee 2 trocars +11 (1d4+4 plus poison), 2 clamps +11/+6 (grab)
Ranged dart +8/+3 (1d4+4 plus poison)
Special Attacks cortical puncture, poison, restraints


Str 19, Dex 13, Con —, Int 12, Wis 10, Cha 1
Base Atk +7; CMB +11 (+15 grapple); CMD 22 (30 vs. trip)
Feats Anesthetist, Skill Focus (Craft (alchemy)), Skill Focus (Disable Device), Skill Focus (Heal)
Skills Craft (alchemy) +12, Disable Device +12, Heal +12 (+15 to treat deadly wounds, poison, or wounds), Perception +5
Languages Common (can’t speak)
SQ medical installation, surgical assistant
Gear alchemist’s lab, antidote kit, healer’s kit, surgeon’s tools, 10 doses of drow poison


Cortical Puncture (Ex)

A cranial dissectibot can use its trocars to drill into the skull of a helpless or pinned creature and selectively extract portions of the target’s brain.

It must pierce the target’s skull with both trocars (a normal attack) but thereafter can maintain the puncture without needing to attack again as long as the target remains helpless or pinned. A cortical puncture does not deliver poison but instead deals 1d4 points of Charisma, Intelligence, or Wisdom drain (DC 15 Fortitude half ) at the end of the dissectibot’s turn each round; determine randomly if the dissectibot is acting independently, but if its creator is present it can specify which ability score to drain. It cannot use its darts while performing a cortical puncture.

Medical Installation (Ex)

Despite its lack of hands, a dissectibot can use the following equipment: alchemist’s lab, antidote kit, healer’s kit, surgeon’s tools, and masterwork thieves’ tools. It can store up to 50 pounds of such gear in racks and compartments within its bodies, replacing them when they are exhausted.

Poison (Ex)

Dart or trocar; save: Fort DC 15; frequency 1/minute for 2 minutes; effect: unconscious 1 minute/8 hours; cure: 1 save. These statistics include adjustments for the dissectibot’s Anesthetist feat.

Restraints (Ex)

A dissectibot has two sets of restraints which it can use to bind a patient. Once it has grappled a creature, it can make grapple checks (whether to maintain the grapple, pin the creature, or perform other special grapple actions) against that creature in place of melee attacks with its clamps, allowing it to make two grapple checks in the same round as it attacks with its trocars.

Surgical Assistant (Ex)

A dissectibot grants a +4 bonus when using the aid another action to assist Heal checks as well as Craft (alchemy) and Disable Device checks as part of a chirurgical procedure (during which it can assist with all relevant skill checks).


Environment any
Organization solitary
Treasure none

This mechanical horror bristles with wires, compartments, and blinking lights up and down its thick stalk-like metallic body, balanced atop six spidery legs and bristling with branching armatures, some with cables and clamps and others tipped with gleaming trocars and pneumatic needlers.

A cranial dissectibot is an example of the light and dark sides of chirurgical practice. In principle, it is a semi-sentient mechanical assistant, programmed and equipped to assist a surgeon in medical matters both simple and complex, whether it be treating poisons or injuries or dealing with disease or dissection. Of course, in the hands of a demented chirurgeon, the cranial dissectibot becomes a terrifying instrument of torment, capable of reducing the bravest of souls to drooling impotence with soulless and heartless clinical precision.

A cranial dissectibot is 7 feet tall in total, its core body 3 feet tall, atop a set of legs 2 feet long and with the upper 2 feet a branching set of limbs and sensors. A cranial dissectibot weighs 500 pounds.


Feats Craft Construct; Spells keen edge, feeblemind; Skill Check(s) Craft (alchemy) DC 20 and Craft (metal) DC 20; Cost 12,000 gp.

Section 15: Copyright Notice

Mechanical Monsters © 2023, Legendary Games; Authors: Jason Nelson, Tom Phillips, Mike D. Welham, Matt Goodall, Alex Riggs, Matt Daley.

scroll to top