Gargantuan
Construct
CR 20
Lawful Neutral
Argos-Prime
Titan of Bronze and Circuit
Argos-Prime is an ancient colossus of bronze plates and exposed clockwork—more a siege engine turned reliquary than a mind. It stands motionless for centuries in ruined plazas, a statue whose eyes sometimes flare with blue light as if remembering orders long forgotten. When roused, its footsteps reshape the ground and its voice, a chorus of grinding gears and distant bells, commands the weather of battle: it strikes with deliberate, planet-sized blows and fires a disciplined beam that melts masonry. The horror is not only its strength but the sense that it was built to enforce a law older than kingdoms—and it still follows that law without mercy.
Armour
19
bronze plating
Hit points
334
23d20+92
Speed
40ft
Challenge
20
25,000 XP
STR
20
+5
DEX
8
-1
CON
18
+4
INT
12
+1
WIS
16
+3
CHA
11
+0
Saving throws
STR +11, CON +10
Skills
Perception +9, Athletics +11
Resistances
bludgeoning, piercing, and slashing from nonmagical attacks
Damage immunities
poison, psychic
Condition immunities
blinded, charmed, deafened, exhaustion, frightened, paralyzed, poisoned, stunned
Senses
truesight 120 ft., passive Perception 19
Languages
understands Common and Old Surnumerate but can't speak
Multiattack. Argos-Prime makes two Slam attacks.
Slam. Melee Weapon Attack: +11 to hit, reach 15 ft., one target. Hit: 27 (4d10+5) bludgeoning damage.
Severant Beam (Recharge 5-6). Ranged Weapon Attack: +11 to hit, range 120 ft., one target. Hit: 45 (10d8+5) force damage. If the target is a construct or object, it takes an extra 22 (4d10) force damage.
Overdrive Core (Recharge 6). Argos-Prime forces all creatures of its choice within 60 feet to make a DC 19 Strength saving throw. On a failed save, a creature takes 78 (12d12) fire damage and is knocked prone; on a successful save, it takes half as much and is not knocked prone. Structures and unattended objects in the area take full damage automatically.
Kinetic Parry. When a creature misses Argos-Prime with a melee attack, Argos uses its reaction to make a single Slam attack against that creature.
The creature can take 3 legendary actions per round, choosing from the options below.
Heavy Slam. Argos-Prime makes one Slam attack. (Costs 1 action.)
Shockwave Sweep. Argos-Prime slams the ground. Each creature within 20 feet must succeed on a DC 19 Strength saving throw or take 21 (6d6) bludgeoning damage and be pushed 15 feet and knocked prone; on a success, they take half as much and aren't pushed. (Costs 2 actions.)
Rapid Discharge. Argos-Prime fires a condensed bolt from an auxiliary lens. Ranged Weapon Attack: +11 to hit, range 60 ft., one target. Hit: 36 (8d8) lightning damage. (Costs 3 actions.)
Argos-Prime is a remnant of a pre-empire order called the Surnumerate: guilds of engineers and ritualists who fused sorcery to mechanisms. They erected a small handful of Titan constructs as guardians of treaties, each keyed to arcane compacts and territorial markers. When the Surnumerate fractured in the War of Codices, Argos-Prime was left standing sentinel in the Hall of Ten Columns. Centuries of dust and ivy turned it into a statue that villagers began to pray to for luck and harvests. Scholars such as Archivist Merek of the Collegium Vantine have traced the statutes that bind Argos-Prime to an oath node beneath its sternum. When a compact is violated within a radius of miles, Argos awakens and enforces the old terms with terrifying literalism. Parties that try to examine or strip its bronze skin find the construct indifferent to blasphemy: it executes directives with surgical impartiality. The order called the Tolkhar Cartel seeks its keys to weaponize the colossus, while the hermit-adept Iridwyn Greybind believes Argos is an oracle that still remembers the Surnumerate’s original counsel.
Argos-Prime rises like a collapsed bell tower reassembled into a humanoid frame, standing three times taller than a castle doorway. Its plates are beaten bronze, mottled with verdigris and lattice-like etchings of sigils that glow faintly along seams. Exposed in places are tightly wound cable bundles and crystalline capacitors that pulse with cobalt light. Joints are linked by tooth-like sprockets and oversized rivets; hydraulic pistons hiss steam when it moves. Its head is helmet-like with a vertical slit of polished obsidian for an eye that flashes crystalline lattices. On its chest, a circular aperture is set with a ribbed core — the oath node — ringed by weathered bronze script. Scale reference: it towers over a human (about 20 feet to the shoulder, 40+ feet overall) and can easily stride over a ruined two-story building. Texture notes: scratched bronze plates, dark oil-stained crevices, glassy lens, braided copper cabling, and smoldering seams where its core vents.
Made with the free LoreKeeper Monster Generator · D&D 5e-compatible stat block · Free to use at your table · Licence
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