Autonomous Defense Unit (自動防衛装置?) are a group of enemies that appears in the Sixth Singularity and Atlantic Lostbelt in Fate/Grand Order
History
Role
Fate/Grand Order
Sixth Singularity: Camelot
Atlantis: Ancient Ocean of the Dreadnought Gods
Characteristics
In Fate/Grand Order, they appear as enemies, introduced in the Sixth Singularity. They are Familiars inside the Atlas Temple.
Autonomous Defense Unit's Saint Graph Designation are Archer in Fate/Grand Order.