Cerberon singularityCanonLegendsInfinitiesThe Cerberon singularity, a black hole, existed within the Cerberon system of the Deep Core.AppearancesReign of the Empire: The Mask of Fear (Indirect mention only) (Unkown)Unkown Unknown Shadow Fall (and audiobook) (First appearance) (Unkown)Unkown Unknown Victorys Price (and audiobook) (Indirect mention only) (Unkown)Unkown Unknown