Ronan the Accuser is a supervillain from Marvel Comics. He is a major antagonist of the Marvel Cinematic Universe. He is the main antagonist of the 2014 film Guardians of the Galaxy and appears as the tertiary antagonist in the 2019 film Captain Marvel. He is a Kree admiral determined to destroy the Skrulls, and to this end he allies with Yon-Rogg. Twenty years later, he turns his attention toward Xandar due to his race's vendetta against it, and is allied with Thanos.