Thaddeus Ross

General Thaddeus E. "Thunderbolt" Ross is a recurring character in the Marvel Cinematic Universe, serving as the secondary antagonist of both the 2008 film The Incredible Hulk and the 2016 film Captain America: Civil War, as a minor antagonist in the 2018 film Avengers: Infinity War, and a minor character in the 2019 film Avengers: Endgame. He is set to appear in Black Widow, which is set after Civil War and before the events of Infinity War.
He was a Lieutenant General of the United States Army. During his career, he was put in charge of the military project called the Bio-Tech Force Enhancement Project, which aimed to recreate the Super Soldier Serum. However, the experiment led to an accident which transformed the scientist Bruce Banner into Hulk. After a long hunt, Banner was captured, only for Ross' subordinate officer Emil Blonsky to transform into the monstrous Abomination which forced Ross to accept Hulk as an ally and allow him to escape after the battle in Harlem. Five years after this incident, he is now serving as the U.S. Secretary of Defense, and speaks to the Avengers on the Sokovia Accords.
He is portrayed by William Hurt.