He is a twisted mentat in the service of Baron Harkonnen. Generally regarded as architect of the plan to destroy the Harkonnen's long time enemy, House Atreides while returning the Baron's stewardship over Arrakis. Mr. De Vries is unusual in that despite his near-prescient[?] mental abilities and intelligence, he serves the Baron with great enthusiasm knowing that one day his master plans on killing him.
wikipedia.org dumped 2003-03-17 with terodump