Thorum Sparkhammer – Steampunk Dwarf Artificer

THORUM SPARKHAMMER

Character Compendium ~ Fighter 4 / Artificer 6 (Armorer)

The City of Cogs and Smog

I. The World: Varethum, the Ironclad City

Varethum is a city that forgot it ever had a sky. Three centuries ago, the Artificers' Conclave ~ a coalition of five Great Guilds ~ harnessed a vein of raw aetheric ore deep beneath the city's bedrock and built the first Pressure Engines: colossal machines that converted arcane energy into steam, and steam into power. The city grew upward and inward, layer by layer, until sunlight became a luxury sold by the Guild of Luminance at a price only the upper tiers could afford.

The five Great Guilds rule Varethum as a shadow oligarchy. They do not sit on thrones. They own the pipes, the valves, the heat, the light, and the water. To defy a Guild is not treason. It is suicide by bureaucracy.

Below the tier-bridges, in the Undersmog, live the people who make everything run and own nothing. It is here that the Broken Gear ~ the resistance network Thorum has bled for ~ was born.

II. Who Is Thorum Sparkhammer

Thorum Sparkhammer is a Mountain Dwarf of fifty-three years, which in dwarf terms makes him somewhere between reckless youth and catastrophic middle age. He stands four feet and eight inches of solid iron conviction, buried under a steam-powered exo-suit of his own design and a beard that has survived three explosions and shows it.

He talks too much, laughs too loud, and has approximately seventeen bad plans active at any given moment ~ at least one of which might accidentally work. He loves machines the way some dwarves love gods: not with reverence, but with the terrifying intimacy of someone who has taken the sacred thing apart and seen what it is made of.

What he does not advertise ~ what lives beneath the jokes and the catastrophic optimism ~ is the weight of what he built.

Five years ago, Thorum designed the Aetheric Compression Engine, a device meant to redistribute thermal energy across the Undersmog's failing heating grid. He handed the schematics to a man he trusted inside the Conclave. Three weeks later, the Engine was mounted on a Guild enforcers' rail-walker and used to superheat an entire Undersmog district during a labor strike. Forty-one people died of steam burns in their homes. The Guild called it a "pressure incident." Thorum knows what it was.

He has not stopped building. He cannot stop. But every machine he makes now carries a question he cannot answer yet: what is the design that cannot be turned into a weapon?

III. Character Sheet ~ Level 10 Snapshot

Race: Mountain Dwarf Class: Fighter 4 / Artificer 6 (Armorer subclass) Background: Guild Artisan (modified ~ expelled, records falsified; Tasha's Cauldron of Everything, homebrew adaptation) Alignment: Chaotic Good Age: 53 | Height: 4'8" | Weight: 210 lbs (310 in full armor)

Ability Scores

Note: Mountain Dwarf grants +2 STR and +2 CON. Ability Score Improvements (Fighter 4, Artificer 4) applied to INT (+2) and CON (+2).

Combat Statistics

Saving Throws

STR +7, CON +8 (Fighter proficiencies + CON mod + PB)

Skills

Athletics +7, History +8, Investigation +8, Perception +4, Arcana +8, Sleight of Hand +4

Proficiencies

All armor and shields, simple and martial weapons, Smith's tools, Tinker's tools, Thieves' tools (Mountain Dwarf + Artificer + Background)

IV. Class Features

Fighter (4 levels) ~ PHB p.71

Fighting Style: Great Weapon Fighting ~ when rolling damage for a two-handed weapon, reroll 1s and 2s once. Thorum's Steamhammer qualifies.

Second Wind ~ Bonus action: recover 1d10+4 HP once per short rest. Flavor: he vents excess pressure from the suit's reserve tank, not rests.

Action Surge ~ Once per short rest, take one additional action on your turn. The suit's emergency output. The most dangerous thing Thorum does with it is also the funniest, usually.

Extra Attack ~ Two attacks per Attack action. (Fighter 5 would grant this by RAW ~ at Fighter 4 / Artificer 6, Extra Attack is granted by the Artificer Armorer subclass at level 5, which replaces the Fighter version seamlessly.)

ASI (Fighter 4): +2 CON

Artificer (6 levels) ~ Tasha's Cauldron of Everything p.9

Magical Tinkering ~ Thorum can imbue small objects with minor magical properties: light, recorded sounds, smells, simple visual effects. He uses this to leave coded signals for the Broken Gear.

Infuse Item ~ At level 6, Thorum knows 6 infusions and can have 3 active simultaneously. His current loadout:

The Right Tool for the Job ~ Thorum can create any artisan's tool in one hour using raw materials. He keeps half a workshop in a battered satchel.

Tool Expertise ~ Double proficiency on checks with tools he is proficient with. Smith's tools and Tinker's tools checks = +12.

Flash of Genius ~ Reaction: add INT modifier (+4) to any ability check or saving throw made by himself or a creature within 30 ft. Once per long rest. Flavor: Thorum shouts a solution so obvious it makes everyone around him feel stupid. It works.

Armorer Subclass ~ TCoE p.14

Arcane Armor ~ Thorum's steam-suit becomes his spellcasting focus, replaces the need for material components where applicable, and cannot be removed against his will. It counts as a single item for infusion purposes.

Armor Model: Guardian ~ The suit specializes for frontline combat.

• Thunder Gauntlets: melee weapon attack, reach 5 ft, deals 1d8 + STR thunder damage. Creatures hit have disadvantage on attacks against targets other than Thorum until his next turn. Counts as a simple melee weapon.
• Defensive Field: bonus action, gain temporary HP equal to Artificer level (6). Usable once per long rest. (Flavor: the suit's pressure core dumps heat into a kinetic buffer.)

Extra Attack ~ Gained at Armorer level 5. Works with Thunder Gauntlets.

Armor Modifications ~ Thorum's infusions can apply to the suit's components individually (helmet, pauldrons, chest, boots) as if they were separate items, despite the suit counting as one.

V. Spellcasting

Spell Slots: two 1st-level, two 2nd-level, one 3rd-level (Artificer 6 progression, half-caster rounded up)

Spells Prepared (INT + half Artificer level = 4+3 = 7)

Armor Model: Guardian always-prepared spells: Thunderwave, Shatter, Mirror Image, Shining Smite, Banishing Smite, Globe of Invulnerability. Thorum prepares from this list and his Artificer list combined.

VI. Equipment & Gear

The Sparkhammer ~ Homebrew (narrative, no mechanical advantage) A massive two-handed whammer, reinforced with aetheric copper coils along the haft. The head is threaded with pressure vents. On a critical hit, Thorum may narrate a burst of steam venting from the coils ~ purely cosmetic, zero mechanical effect. It deals 2d6+3 bludgeoning damage. The coils are etched with forty-one hash marks. He knows what they mean.

The Pressurized Exo-Suit ~ Arcane Armor (Armorer feature, TCoE) His own construction, built over seven years. It smells of grease and scorched copper. The backpack assembly (visible in the miniature) is the Compression Core: a personal pressure engine that powers the suit's thunder gauntlets and defensive field. It is emphatically not a weapon. He is very clear about this.

Tinker's Satchel ~ Smith's tools, Tinker's tools, Thieves' tools, 40 ft of copper wire, three ball bearings, one jar of grease labeled "not for food," two flasks of oil, a broken pocket watch that belonged to someone whose name he does not say.

Broken Gear Token ~ A cast-iron gear with one tooth missing. The symbol of the Undersmog resistance. He wears it on a chain inside the suit, against his chest.

VII. Personality

Trait 1: He narrates his own experiments in real time, even when they're failing ~ especially when they're failing.

Trait 2: He genuinely cannot tell when he has said something devastating. He delivers the worst truths in the same voice he uses to announce that lunch is ready.

Flaw: He trusts his own intelligence far beyond what the evidence supports. Every catastrophe begins with the phrase "I've done the math."

Ideal: Creation is sacred. What you build outlives you. Make sure it doesn't kill anyone.

Bond: The Broken Gear is his family. He would burn down everything he has built to keep them breathing.

Secret he keeps even from them: He still has the original schematics. He has not destroyed them because he thinks ~ he knows ~ there is a version of the Engine that cannot be weaponized. He is trying to find it. He is terrified he will.

VIII. Backstory ~ The Engine Incident (Extended Prose)

There is a saying in the Undersmog: "The Guild doesn't kill you. It just makes sure you built the thing that does."

Thorum Sparkhammer was born in the Coppergate district, third level down, where the pipes sweat and the ceilings are low and the dwarves who live there learn to be short and quiet and useful. He was two of those things.

He was not quiet.

By the age of thirty he had been hired, fired, and rehired by four different Guild subsidiaries, each time for the same reason: he was the best mechanist they had ever seen, and he could not be controlled. He asked questions during Guild briefings. He submitted modifications to approved designs. He once, memorably, delivered a commissioned weapons array and included a seven-page document explaining why the commission was a crime.

He was let go. They kept the array.

The Broken Gear found him three years later, living in a sub-sublevel workshop the size of a generous closet, building things that didn't work for people who couldn't pay him. Mira, the network's coordinator at the time, knocked on his door and said she needed an engineer who was too angry to be frightened. He told her he was frightened all the time. She said that was fine. She needed the angry part.

For eight years he built for the resistance: jammers that disrupted Guild enforcement signals, heating units made from scavenged parts, pressure regulators that kept the Undersmog's water pipes from rupturing in winter. Small things. Things that kept people alive. Things that could not be pointed at anyone.

He was happy, in the way that people are happy when they are too busy to notice what they are missing.

Then a man named Aldric Voss appeared. Voss presented himself as a Conclave reformist ~ an insider willing to provide safe conduit for Thorum's work to reach the upper tiers, to force a policy review of the heating allocation system. He had documents. He had clearance codes. He had an easy smile and very clean hands.

Thorum spent six months building the Aetheric Compression Engine. A device designed to redirect surplus thermal energy from Guild-controlled conduits into the Undersmog grid. Not a weapon. A heater. The most beautiful machine he had ever made.

He handed Voss the schematics on a Tuesday.

On a Friday, three weeks later, he was standing in the Undersmog ruins of the Tinker's Row district. The air still smelled of steam and something underneath steam that he did not want to name. The Guild's after-action report called it a "pressure incident caused by illegal infrastructure modifications." Forty-one dead. Mostly workers. One child.

Voss was promoted to senior liaison of the Conclave's Infrastructure Security Division six months later.

Thorum still has the schematics. He has told no one.

IX. Roleplay Dialogue Examples

When asked about his past work for the Guild:

"Oh, yeah, brilliant career. Fired four times, consulted on six projects I'm not allowed to name, and once accidentally made a weapons array so efficient they gave me a bonus and a very polite letter asking me never to come back. Thrilling stuff. What are you having for dinner?"

When the party suggests a plan he considers too dangerous:

"Right, so I've done the math ~ and look, I'll be honest, the math is not great. But here's what I think. If we're going to probably die anyway, we might as well probably die doing something interesting. Also I've modified this wrench. Don't ask how. It's relevant."

In a rare quiet moment, to someone he trusts:

"The worst part isn't that it happened. The worst part is that it worked perfectly. The Engine performed exactly as designed. I built something flawless and someone else decided what it was for. I keep thinking... if I'd just made one bad weld. One faulty seal. Maybe the worst machine I ever built would have been the kindest thing I ever did."

When an ally thanks him for building something that saved lives:

"...Yeah." (long pause) "Yeah, good. That's ~ that's what it's supposed to do." (goes back to work, does not look up)

X. Multiclass Progression Guide (Levels 5-10)

At level 11, the recommended path returns to Artificer 7 for the third attunement slot and expanded spell list. Fighter 5 (for a second Extra Attack) is mechanically tempting but redundant given the Armorer already grants Extra Attack.