Picture the most insufferable perfectionist you know — the one who sends the plate back three times and corrects your grammar mid-sentence. Now give him power armour, ten thousand years of practice, and a god who whispers that nothing is ever quite good enough. Congratulations — you have met the Emperor's Children, and they would like a word about your brushwork.
Welcome back to Faction Files, our series peeling apart the lore of Warhammer 40,000 one faction at a time — no dice, no meta, just who these lot are and why they turned out like this. Today: the Phoenician's sons, the Legion that chased perfection so hard it fell off the edge of the galaxy and into Slaanesh's lap. If you fancy assembling your own gilded horror show, our Emperor's Children collection is right this way.

FACTION FILES // DOSSIER No. 024 — CLASSIFIED: PERFECTIO
- Designation: Emperor's Children (III Legion, now Chaos Space Marines)
- Threat classification: Chaos — dedicated to Slaanesh, god of excess
- Origin: Chemos; Primarch Fulgrim, the Phoenician
- Governing intelligence / leadership: Fulgrim, now a Daemon Prince; splintered warbands of perfectionists
- Modus operandi: Perfect every sensation, every kill, every note — to excess
- On the tabletop: Fast, elite, brutal in melee, and painfully stylish
- Difficulty (hobby): High — that purple and gold will judge every slip of the brush
FILE 01 // Origins: the perfect Legion
The Emperor's Children began as the golden boys — quite literally. Their Primarch, Fulgrim, came to rest on Chemos, a dying world scraping by on rationed labour, and dragged it back to prosperity through sheer relentless drive. When the Emperor found him, Fulgrim was already everything a Primarch was meant to be: gifted, driven, insufferably brilliant at everything he touched.
His Legion earned a singular honour no other received — the right to bear the Emperor's own heraldry, the Palatine Aquila, as a mark of his personal favour. That is the whole tragedy in a sentence: told they carried the Emperor's own likeness, mere excellence began to feel like failure. They took the name seriously. Perhaps too seriously.
FILE 02 // The pursuit of perfection: when good enough never is
Here is the thing that makes the Emperor's Children genuinely tragic rather than just villainous. They did not fall to Chaos out of ambition or rage or grief, like so many of their traitor brothers. They fell chasing perfection — a virtue, until it isn't.
It curdled by degrees. On the temple-world of the Laer, Fulgrim claimed an exquisite blade — one that harboured a daemon of Slaanesh — and through it the ruinous work began. Perfection of skill became perfection of sensation, feeling everything completely — then more completely — until only the extremes still registered. Pleasure, pain, and eventually no difference between the two. Slaanesh, the Dark Prince of excess, is god of exactly that appetite, and the Emperor's Children walked into its arms convinced they were still improving.

Fulgrim himself is the cautionary tale writ large. One of the most gifted of all the Primarchs is now a serpentine Daemon Prince of Slaanesh — beautiful, monstrous, and beyond the son of Chemos he once was. Perfection, it turns out, has a price, and it is you.
FILE 03 // How they wage war: murder as a performance
An Emperor's Children war party does not simply want to win. It wants to win beautifully. Every kill is a brushstroke, every battle a composition, and losing is not merely defeat but a botched masterpiece — far worse, to their minds.
They fight fast and up close, because no sensation rivals the intimacy of a blade. And then there is the noise. The Legion's most infamous export is the Noise Marine: a warrior so hollowed out by excess that only sound at obscene volume still reaches him. Sonic blasters, blastmasters and doom sirens turn their advance into a literal wall of weaponised music that liquefies armour and eardrums alike. It is the only faction in 40k where the artillery has a setlist.
The result is a foe that treats slaughter as high art and cannot understand why the galaxy won't sit still and appreciate it. For the broader picture of the Long War, the wider Chaos range is full of neighbours who feel much the same.
FILE 04 // Lucius the Eternal: the swordsman who cannot die
Every faction has its standout character, and the Emperor's Children have one of the nastiest wrinkles in the setting. Lucius the Eternal is the Legion's peerless duellist — a swordsman so consumed by his own brilliance that Slaanesh granted him a genuinely horrible gift.
Kill Lucius in a duel and feel even a flicker of satisfaction at having done so, and you are lost. That pride is all it takes: his soul claims your body, reshaping it into his own, and Lucius walks away wearing your face. He has died countless times and always returns, because to beat him is to become him. To be truly rid of him you must kill him and feel absolutely nothing — which, against a foe that theatrical, is easier said than done.
FILE 05 // Why collectors love them
Here is the good news for the hobbyist. After decades as a scattering of upgrade sprues and conversions, the Emperor's Children finally got the full, gloriously ostentatious plastic range they deserved — a standalone army of preening, dagger-slim aristocrat-killers.
They are a paint-lover's faction, and unapologetically so. A few of the joys:
- That palette: royal purple and gold is one of the most striking schemes in the whole game — and yes, it will punish sloppy edge highlights, which is rather the point.
- Character in every pose: the sculpts drip with arrogance, from bared blades to that unmistakable swagger.
- Show-stopping leads: Fulgrim and Lucius are centrepiece models begging for your best work.
New to all this? Our beginner's guide to Warhammer 40k covers the basics — the perfect place to find your feet before you commit to a lifetime of edge highlighting.
Threat assessment
The Emperor's Children are what happens when a virtue is pursued without a brake. They are fast, lethal, endlessly skilled and incapable of restraint — an enemy that will kill you flawlessly and then critique the way you fell over. You cannot shame them, because they have redefined every excess as refinement. You can only hope they grow bored of your corner of the galaxy before they perfect it into a crater.
Final thought: the Emperor's Children are 40k's most human villains, because we all know that person who could never leave well enough alone. They just took it to the one logical, damnable conclusion — and made it look absolutely fabulous on the way down.
Further reading: crunch the numbers with our Emperor's Children: Army Analysis, or get the lay of the land in the Warhammer 40k Factions Hub.
Explore more: Emperor's Children
On the tabletop: Emperor's Children: Army Analysis — how the army actually plays.
Start collecting: Shop the Emperor's Children range at Loaded Dice.
