Martina TBM-130 Tunnel Bore (3.5e Monster)

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Author: Eiji-kun (talk)
Date Created: 6-3-15
Status: Complete
Editing: Clarity edits only please
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Martina TBM-130 Tunnel Bore
Size/Type: Gargantuan Construct (Bot)
Hit Dice: 19d10+60 (164 hp)
Initiative: -5
Speed: 20 ft, burrow 20 ft; can't run
Armor Class: 20 (-5 dex, +19 natural, -4 size), touch 1, flat-footed 20
Base Attack/Grapple: +14/+41
Attack: Bore +25 melee (6d6+15, 20/x2)
Full Attack: Bore +25 melee (6d6+15, 20/x2)
Space/Reach: 20 ft/20 ft
Special Attacks: Create Tunnel
Special Qualities: Adapt Body, Bot Traits, Construct Traits, Darkvision 60 ft, Deep Bore, DR 10/adamantine, Low-Light Vision, Programming, Resist Acid/Cold/Fire 10, Tremorsense 60 ft
Saves: Fort +6, Ref +1, Will +8
Abilities: Str 40, Dex 1, Con -, Int -, Wis 15, Cha 1
Skills: Profession Miner +12
Feats: -
Environment: Any
Organization: Solitary
Challenge Rating: 13
Treasure: Standard
Alignment: Always True Neutral
Advancement: 20-38 HD (Gargantuan), 39-58 HD (Colossal)
Level Adjustment:

In old days it would take decades to dig a tunnel. With the power of science, the tunnel was completed in 3 days.

Developed by the Luna-Tesla Corporation to dig through and create the hundreds of miles of service tunnels and shafts in their many underground moon bases, the tunnel bore is a long tube-like machine, not unlike a purple worm, whose flat head is a whirring nightmare of adamantine blades. It slowly chews through almost any surface, digesting and spitting out the remains, and making a miner's job much easier. It can create tunnels up to as wide as it is, 20 ft wide. It's length is significant, but if not burrowing it is usually coiled up like a snake.


The tunnel bore is not a weapon but a tool. However if some poor soul were to be drawn into the swirling blades and grinders which compose of the machine's face, one only needs to see what it does to stone to know what it would do to them.

Adapt Body (Su): The tunnel bore is always under the effect of adapt body.

Create Tunnel (Ex): The tunnel bore can not only choose to leave a tunnel behind its passing, but also re-enforce it with concrete. If it travels at half speed while burrowing, the tunnel it leaves behind it resistant to collapse and is considered to be lined by worked stone.

Deep Bore (Ex): The tunnel bore's natural weapons are made of adamantium. In addition it can burrow through any substance of less than hardness 20, even stone and metal. Its speed is reduced to 5 ft when burrowing through these mediums. Materials it burrows through go through the length of its body where they are processed into individual minerals and materials. At the tail, it deposits raw materials it has chewed through as debris, typically gathered by other workers or machines for further processing.

Programming: The tunnel bore possesses the following programs: Collect, Identify Object, Job Function (Miner), Reposition, Sort


Martina TBM-130 Tunnel Bores are build out of a composite of many different metals, plastics, and alloys which must be processed in a factory. In addition its computer core requires special components and programming. The cost of the base material components are worth 10,000 gp.

Assembling the body requires a DC 28 Craft (technology) check, a DC 28 Knowledge Engineering, or a DC 28 Knowledge Xeno check.

CL 15th; Craft Construct, lesser geas, passwall; Price 100,000 gp; Cost 45,000 gp + 3600 XP.

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Eiji-kun's Homebrew (5343 Articles)
AlignmentAlways True Neutral +
AuthorEiji-kun +
Challenge Rating13 +
EnvironmentAny +
Identifier3.5e Monster +
Level Adjustment+
RatingUndiscussed +
SizeGargantuan +
SubtypeBot +
TitleMartina TBM-130 Tunnel Bore +
TypeConstruct +