The Six Sinister Siblings of Oric The Awesome are a group of people who are presumably Oric's siblings. Each has dominion over one of the Dungeon Level in the Warrens, each level presumably owned by the Seraphim, who have been all but exterminated by Oric. They have been stated(by Cain) to be used as batteries or conduits, in order to power the Underworld. All of them had their names revealed, but only four have been confirmed as having been on-screen. An unknown female human dressed in blue was briefly seen in Underside, and is thought to be The Eye, Floe, but it is unknown if this is her true identity. Ecco, The Voice, has been heard over a speaker system, but not seen.
The identity of the Siblings changes frequently, such as whenever they are killed in one of the Warren's cycles and brought back to life by the Last Seraphim's Sanctuary, but their Soul Stars and thus their essential natures remain the same.
Each Sibling also has a given role, most likely replacing that of the Seraphim they replaced.Oric has ordered the other five Siblings to attempt to kill the current Target, Ciro, for unknown but frequently theorycrafted reasons.