The Tyrannofex is the Tyranid answer to a battle tank, a walking fortress grown around one enormous bio-cannon. It exists to crack armour and heavy infantry at range, and it’s one of the biggest guns the Hive Mind can field without going full Bio-Titan.
What the tyrannofex actually is
Think of it as a Tyranid tank that happens to be alive. Its bulk, armour plating and firepower let it trade blows with (or outgun) the most heavily armed vehicles conventional armies can build.
The defining feature is the massive cannon fused into its torso. It’s the largest and most destructive weapon carried by anything smaller than a Bio-Titan, which tells you roughly where it sits in the Tyranid arsenal.
Main bio-weapons
Not every Tyrannofex carries the same gun. The Hive Mind grows different bio-weapons depending on what it expects to face, and three main patterns show up in the lore.
- Acid spray: stores and sprays caustic digestive fluid that eats through organic matter and body armour alike.
- Fleshborer hive: a living colony of Fleshborer beetles. It hatches thousands of fast-maturing eggs that have to be expelled regularly, or the Tyrannofex risks bursting apart from the inside.
- Rupture cannon: fires two projectiles in quick succession. The first is a bloated tick that bursts into oil on impact; the second is a hard seedpod. The oil dissolves the seedpod’s shell in a fraction of a second, and the resulting implosion is powerful enough to turn armoured vehicles inside out.
Secondary weapons and close-quarters tricks
Alongside its main cannon, a Tyrannofex carries anti-infantry weapons embedded in its carapace and breeding chambers in its thorax, so it isn’t helpless against lighter targets.
Close combat is still its weak spot. It’s bulky and ponderous, and prolonged melees are dangerous for it. That’s why the Hive Mind rarely sends one out alone, usually attaching a brood or more of Termagants to screen it while it focuses on blasting bigger threats at range.
Some Tyrannofexes have another trick: they can emit a stress pheromone that draws nearby Tyranid creatures in to help when enemies get too close.
Named variants
Two configurations get called out by name in the sources, built around different roles on the battlefield.
| Variant | Main weapon | Extras |
|---|---|---|
| The Slayer of Hordes | Acid spray | Desiccator larvae, cluster spines |
| Tank Quaker | Rupture cannon | Electroshock grubs, stinger salvo, regeneration |
Where it fits in the Tyranid swarm
The Tyrannofex is the heavy anti-armour piece in a Tyranid planetary force, sitting above the Exocrine and Haruspex in raw gun size but below the Bio-Titans. It’s a monstrous creature, not a commander, and it works best when the swarm keeps smaller foes off its back.
If you’re comparing it to other Tyranid big bugs, the short version is: the Carnifex brawls, the Exocrine lays down fire, and the Tyrannofex is the one built to punch through tanks.
Key facts
- The Tyrannofex is a monstrous Tyranid battle-fortress built around a single massive bio-cannon.
- Its main gun is the largest and most destructive Tyranid weapon carried by anything below Bio-Titan scale.
- Three known main weapons: acid spray, fleshborer hive, and rupture cannon.
- It’s vulnerable in prolonged melees and usually escorted by Termagants.
- Named variants include the Slayer of Hordes and the Tank Quaker.
FAQ
What is the Tyrannofex’s main weapon?
It’s built around one huge bio-cannon fused to its torso, the biggest weapon carried by anything smaller than a Bio-Titan. Known patterns include the acid spray, fleshborer hive, and rupture cannon.
What’s the Tyrannofex’s weakness?
Close combat. It’s bulky and slow in a melee, so the Hive Mind usually sends Termagants along to protect it while it shoots.
How does the rupture cannon work?
It fires two shots in quick succession: an oil-filled tick, then a hard seedpod. The oil dissolves the seedpod’s shell almost instantly, causing an implosion strong enough to wreck armoured vehicles.