Claim: Thanos has yet to appear in a movie.
Evidence: Thanos appears in the Marvel Cinematic Universe 's various films , including The Avengers -LRB- 2012 -RRB- , portrayed by Damion Poitier , and Guardians of the Galaxy -LRB- 2014 -RRB- , Avengers : Age of Ultron -LRB- 2015 -RRB- , Avengers : Infinity War -LRB- 2018 -RRB- and its untitled sequel -LRB- 2019 -RRB- , portrayed by Josh Brolin.