Thaal Sinestro (or simply Sinestro) is a supervillain appearing in American comic books published by DC Comics, particularly those featuring Green Lantern. Created by John Broome and Gil Kane, Sinestro is a former Green Lantern Corps member who was dishonorably discharged for abusing his power. He is the archnemesis of Hal Jordan and founder of the Sinestro Corps. Sinestro has appeared in various forms of non-comics media including shows, films, and video games, and he made his live-action debut in the 2011 film Green Lantern, played by Mark Strong. Source: Wikipedia (en)