Omoikane

Omoikane is a male of unknown species. He is a within the  that works directly under  Kurama. It is said that he and Haruka compose the inner circle of the Fleet Admiral and the orders they are required to follow are those they receive from Kurama himself. Most often, Omoikane is sent on missions involving espionage and assassination on Kurama's personal word. His very name is enough to strike fear in pirates across the ocean.

Behind the Scenes
The name, Omoikane (思兼), is derived from the deity of the same name, whose name means "serving one's thoughts".