Descended from an ancient order of assassins, House Moritani has worked for generations to shake its black reputation. The House is perhaps best known for its wholesale destruction of the Ginaz (House Atreides allies and age-old rivals of the Moritani) during a lightning quick war of assassins on the planet Grumman in 10,166. Officially sanctioned by the current Emperor, Shaddam IV, the events that transpired reminded the Landsraad membership that the old forms were far from dead.
As the undisputed rulers of Grumman, House Moritani then retreated into relative obscurity once more, its ancient honour having been satisfied. Rumours persist that the House has initiated a widespread military and materiel buildup on the world, perhaps in an effort to restore social order, or perhaps to rebuild the Moritani forces sacrificed during the war. Other rumours whisper that the Moritani have revived one of the ancient Bhotani assassin schools, but so far those rumours remain unconfirmed.