Sons of Antaeus
GW canon
Summary
Mysterious Cursed Founding Chapter with unstable gene-seed, extraordinarily tough and almost immune to pain.
Allegiance
Loyalists
Founding
21st Founding (Cursed Founding)
Colours
Grey and black
Doctrine
Endurance and pain resistance
Epoch
M41
History
The Chapter belongs to the Cursed (21st) Founding and first appears in the Chronicles of the Third Inter-Guild War of the Inca Sector (850-901.M41). Captain Rakman of the Subjugators reports how the Sons of Antaeus struck Void Dragons Eldar pirates from behind, withstood the xenos' storm of fire and then vanished without a trace. They have since been sighted on many missions.
Notes
The gene-seed mutation gives a strong, almost metallic bone structure, comparable to Plague Marine toughness. It is unstable: "Cursed Knights" seem unscathed, "Abominations" show the worst mutations. The Ultramarines therefore honour the Chapter little.
Additional Information
Founding, detail
M36 (Cursed Founding)
Sources
Lexicanum, article “Sons of Antaeus” (revision 706654, retrieved 25 Oct 2026): https://wh40k.lexicanum.com/wiki/Sons_of_Antaeus. Works cited there: Chapter Approved 2004 - The Cursed Founding; Shadowbreaker (Novel); The Vorago Fastness (Short Story); White Dwarf 260 (UK) - Index Astartes: The Cursed Founding.