Horus Heresy · atlas

Mechanicum · split ranks

Legio Cybernetica

Legio Cybernetica is a branch of the Mechanicum that fields cohorts of battle automata (robots controlled by cybernetic “protocols”). In the Heresy it split: loyalist maniples (38 in the Signus Campaign, on the side of the Blood Angels) against the mass that flowed into the Dark Mechanicum, where Cyclothrathe secretly amassed enormous legions of automata.

Category
Mechanicum
Side
Split ranks
Key events
2 events
Forces
Cohorts of battle automata attached to the Taghmata structure; a loyalist/traitor split; a heavy presence in the Dark Mechanicum (Cyclothrathe — a major producer).

Fate

Split along with the Mechanicum; the traitor cohorts went to the Eye of Terror.

Key events

Sources

  1. WH40k Fandom: Dark Mechanicum
  2. WH40k Fandom: Cyclothrathe
  3. Atlas compilation · source check 2026
Open in the atlas

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