House Harkonnen is one of the major noble Houses in the universe of Frank Herbert's Dune series. Known for their deviousness, intrigue, and desire for power, the Harkonnens are formidable opponents.
The family motto, "Never Forgive, Never Forget," speaks to their dark and ruthless nature. They are often contrasted with their arch-rivals, House Atreides.
Their home planet, Giedi Prime, reflects their character—industrialized and harsh, with a focus on efficiency and productivity often at the expense of the environment and the welfare of its inhabitants.
While their methods might not be admirable, the Harkonnens' strategic prowess and cunning have allowed them to maintain power and influence silently, lurking like shadows.