Revision 1

The Legion Build Drone is the Legion of Truth construction unit, a Tier 0 flyer with 25 health that moves at 2,000. It costs no supply, raises every Legion structure, and is the unit that assembles the two heaviest things the faction fields: the Terror Tank and the Dreadnought are built in the field by a drone rather than produced from a building.

Figures below describe the September 2026 Early Access build, the one carrying the identifier ZS.c36778, and they move with the weekly patch cadence. Roughly half the versus roster had a stat touched in the fortnight before that build was captured, so treat every number here as dated rather than permanent.

Stat Block

Weapons

None. The drone has no attack.

Abilities

None listed. Construction is the unit function rather than an ability with a cost and a cooldown, so the record carries it as a list of what the drone can create rather than as a spell.

What It Builds

Twelve entries, covering the entire Legion structure list plus two units:

The last row is the one worth understanding. Neither heavy unit comes out of a production building. A drone assembles them on the spot, and the Terror Tower boosts that construction by +100% when it is nearby, which is why a Legion player usually places the Terror Tower where the army is rather than where the base is.

Upgrades

None.

Conversion Costs

None. The Build Drone is not eligible for Infuse, Reanimate or Replicate. Reanimate is the Legion conversion mechanic, paid out of the same top bar power pool as the Grell Infuse and the Xol Replicate. While the unit lives it attacks and moves 30% faster. When it dies it gets back up, 30% slower than the original, and keeps fighting. It does not apply here.

Role

This is infrastructure rather than an army unit, and the stat line says so: 25 health with no armour value dies to a stray shot. What it has instead is speed. Two thousand is three times the Exalted at 650 and four times the Mammoth at 400, and flying means terrain does not slow it down, so a drone crosses a map faster than anything can intercept it.

The practical consequence is that Legion expansion and Legion heavy unit production are both limited by drone positioning rather than by building placement. A Terror Tank started at the front line is a Terror Tank that arrives at the front line.

Faction Context

The Build Drone comes out of the Garrison Tower alongside the Legion Labourer and the Scouting Drone. Between them they cover construction, economy and scouting, and none of the three costs supply.

The Protectorate fields an equivalent unit with its own entry in the roster. The two are separate units on separate factions and this page covers only the Legion one.

Tier and Armour Interactions

Medium armour with an armour value of 0 on a 25 health body, carrying the Flyer tag. Flyer is a tag rather than an armour type, as the Units hub sets out, and it governs targeting: anything that cannot shoot upward cannot touch a Build Drone at all. That is the entirety of its survivability.

Counters

Strong Against

Weak To

Notes

The roster record for this unit is PARTIAL. Two fields are named as missing: cost and description.

The engine identifier on this unit is a Protectorate name rather than a Legion one, which is a data layer artefact worth knowing about when matching records by identifier. It does not imply shared behaviour and nothing on this page rests on it.

Per unit numbers are drawn from a community maintained entity catalogue that the studio links from each of its own faction pages. It is the only place the full stat block is published, and it is not a studio document, so the figures are best read as careful community documentation of a build rather than as an official specification. Dated balance notes, by contrast, come straight from the studio patch posts.