The Stahlritter (
鉄機隊) is a military unit commanded by Arianrhod. It is considered the most powerful force in Ouroboros. Modeled after and not to be confused with the Eisenritter (which Arianrhod also led several centuries ago), the Stahlritter consists of three female knights and a number of Archaisms. Stahlritter members are not Enforcers, but they rival them in power and often work alongside them.
List of Stahlritters
|Duvalie||The Swift||Head knight|
- Stahlritter means "steel knight(s)" in German.
|Anguis||Vita Clotilde (2nd) - Georg Weissmann (formerly 3rd) - Mariabell Crois (3rd) - Thousand Oathbreaker (4th) - F. Novartis (6th) - Arianrhod (7th)|
|Enforcers||Campanella (0) - McBurn (I) - Leonhardt (II) - Golden Butterfly (III) - Luciola (VI) - Walter (VIII) - Sharon Kreuger (IX) - Bleublanc (X) - Joshua Bright (XIII) - Renne Hayworth (XV) - Shirley Orlando (XVII)|
|Stahlritter*||Duvalie (head knight) - Ines - Ennea|
|Associates||Jesters - Gilbert Stein - Cedric Reise Arnor*|
|Bases||Lakeside Laboratory - Glorious - Celestial Globe|
|Thirteen Factories||Doll Studio - Black Workshop|
|Orpheus Final Plan||Gospel Plan - Phantasmal Blaze Plan - Eternal Recurrence Plan|
|External events||Azure-Zero Project - October War - Great Twilight Plan - Operation Jormungand|
|Technology||Archaism - Pater-Mater* - Aion Type-α - Aion Type-β - Aion Type-γ - Aion Type-αII - Aion Type-βII - Aion Type-γII|
|Concepts||Sept-Terrion - Outside (Divergent Laws) - Carnage|
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