The Dominus Knights are the heaviest class of Imperial Knight in Warhammer 40k, towering over the more common Questoris patterns. They’re walking fortresses built for siege and annihilation, and they’re a favourite for players who want one model to dominate the battlefield.
What are the Dominus Knights?
The Dominus Knights are a pattern of Imperial Knight, the towering piloted war machines fielded by the noble houses of the Imperium. Among the Knight classes, the Dominus pattern is the largest in common use, a walking fortress packed with heavy weapons and thick armour.
Where a Questoris Knight is a versatile all-rounder, a Dominus is a dedicated engine of destruction. It trades some speed and flexibility for raw firepower, making it a centrepiece unit in both lore and on the tabletop.
- Largest common Imperial Knight pattern, bigger than Questoris or Cerastus.
- Built as a walking fortress: heavy armour, overwhelming firepower.
- Piloted by a single noble, bonded to the Throne Mechanicum.
- Used by both Imperial and Chaos Knight households.
The main Dominus variants
There are two main Imperial Dominus Knights: the Knight Castellan and the Knight Valiant. The Castellan is the long-range gun platform, mounting a volcano lance and shieldbreaker missiles for cracking heavy targets. The Valiant is the close-range brawler, built around a conflagration cannon and thundercoil harpoon for burning and impaling whatever gets too close.
Chaos Knights field a corrupted equivalent, the Knight Tyrant, which uses the same chassis but is twisted by the Dark Mechanicum and the Ruinous Powers.
| Variant | Role | Signature weapons |
|---|---|---|
| Knight Castellan | Long-range fire support | Volcano lance, shieldbreaker missiles |
| Knight Valiant | Close-range assault | Conflagration cannon, thundercoil harpoon |
| Knight Tyrant | Chaos-corrupted Dominus | Same chassis, warped by Chaos |
Why they matter
Dominus Knights matter because they’re the closest a Knight army gets to a true super-heavy centrepiece without leaving the Knight faction. In lore, they’re the engines noble houses bring out when a war zone needs to be broken, more than won. On the tabletop, they’re a big points investment that can delete key enemy units if you position them well.
They also matter for the wider Knight range: the Dominus pattern sits above the Questoris and Cerastus patterns in size and firepower, and below only the truly enormous Acastus Knights like the Porphyrion.
How they connect to other Knights
The Dominus pattern is one branch of a larger family. The smaller Armiger Knights scout and screen, the mid-sized Questoris Knights do the heavy lifting, and the Cerastus patterns sit between Questoris and Dominus in size. The Acastus Knights are even bigger, but they’re far rarer.
All of them share the same core technology: the Throne Mechanicum that bonds a pilot to the machine, and the ion shields that keep them alive under fire. Chaos Knights use the same chassis, but their pilots are bound to darker patrons.
- Armiger: light scout Knights.
- Questoris: the standard, most varied Knight class.
- Cerastus: larger and more specialised than Questoris.
- Dominus: heavy siege and firepower Knights.
- Acastus: the biggest and rarest Knight class.
Key facts
- Dominus Knights are the largest common Imperial Knight pattern.
- Main variants: Knight Castellan and Knight Valiant.
- Chaos Knights field a corrupted version called the Knight Tyrant.
- They’re built as walking fortresses with heavy weapons and thick armour.
- They sit above Questoris and Cerastus Knights in size, below Acastus Knights.
FAQ
What’s the difference between a Dominus Knight and a Questoris Knight?
Dominus Knights are bigger and more heavily armed, built for siege and heavy firepower. Questoris Knights are smaller, more flexible, and far more common.
Which Dominus Knights exist?
The main ones are the Knight Castellan and Knight Valiant for the Imperium, plus the Knight Tyrant for Chaos Knights.
Are Dominus Knights good on the tabletop?
They’re a big points investment, but they bring serious firepower and can anchor a Knight army. How good they are shifts with each edition and points update.