Arcturus is a uniquely named member of the Penitus Oculatus who is attacking Nazir during the raid on the Dark Brotherhood Outpost during the quest "Death Incarnate." He must be killed to advance the quest.
- There is another Imperial NPC in The Elder Scrolls IV: Oblivion also named Arcturus who is a member of the Blades. It is possible that they are related as their bloodlines have sworn to protect the Emperor.
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