Machine Empire
Faction of sentient machines ruled by Omnius and Erasmus in the Dune prequels.
House Corrino
Imperial house that ruled the Known Universe before the rise of House Atreides.
House Harkonnen
Ruthless and decadent noble house, enemies of the Atreides.
House Atreides
Noble house from Caladan, known for honor and loyalty. Protagonists of the main saga.