Doonium was a metal with a primary use for Imperial Star Destroyer construction. It was also used in the construction of the Death Star, which was deduced my Grand Admiral Thrawn when noticing discrepancies in Doonium supplies. Appearances Thrawn This article is a stub. You can help Star Wars Rebels Wiki by expanding it. Retrieved from "https://starwarsrebels.fandom.com/wiki/Doonium?oldid=93489" Categories: Article stubs Items Community content is available under CC-BY-SA unless otherwise noted.