Kaecilius is the secondary antagonist of the 2016 Marvel Cinematic Universe film Doctor Strange. He was a former member of Masters of the Mystic Arts who joined in the hopes that it will give him the power to bring back his deceased wife however upon realizing even that wouldn't work he would eventually mistakenly believe that Dormammu can do it and bring eternal life to all people on Earth. This would lead him to form a cult of Dormammu worshipers known as The Zealots.