Thanos (Marvel Cinematic Universe)

Thanos is the main antagonist in the entire Marvel Cinematic Universe. He is also the quaternary antagonist in the superhero films, The Avengers, Guardians of the Galaxy, and Avengers: Age of Ultron. He will become the foremost and possible main antagonist of Avengers: Infinity War - Part 1 & Part 2.

He is a powerful alien warlord who rules over a dead dimension and commands a massive army known as the Chitauri. He allied himself with Loki to invade Earth, and allied with Ronan the Accuser to destroy Xandar, both in exchange for the deliverance of two powerful infinity gems, but they both failed to accomplish this task and had betrayed him.

He was portrayed by Damion Poitier in The Avengers. He is portrayed by Josh Brolin in Guardians of the Galaxy and Avengers: Age of Ultron and Brolin will reprise Thanos' role in Avengers: Infinity War - Part 1 & Part 2.