Horus Heresy · atlas

Mechanicum · traitors

Estaban III

Estaban III is a traitor forge world of the Segmentum Solar with extensive orbital shipyards, a stronghold of the secret cult of Teleologicalica (an aspect of Chaos, later known as Tzeentch; the cult spread heresy even into the ranks of Legio Tempestus). Together with its sister world Estaban VII, it is one of the few traitor holdings in the Solar; at the dawn of the Heresy it turned its resources to Horus, supplying the assault on Terra with void ships and war machines.

Category
Mechanicum
Side
Traitors
Key events
not named
Forces
An industrial hub with extensive orbital shipyards in the Segmentum Solar; together with its sister world Estaban VII, one of the few traitor holdings in the Solar. A stronghold of the secret cult of Teleologicalica (an aspect of Tzeentch).

Fate

At the dawn of the Heresy it turned its resources and the might of its cult to Horus, becoming a major source of void ships and war machines for the assault on Terra.

Sources

  1. WH40k Fandom: Estaban III
  2. WHC: Heraldry of the Dark Mechanicum
  3. Atlas compilation · source check 2026

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