Detailed Instructions: Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.
Q: In The Avengers ( 2012 ) Thanos makes a cameo appearance in the middle of the end credits . Damion Poitier ( credited as Man # 1 ) portrays Thanos as Loki 's mysterious benefactor . In Guardians of the Galaxy ( 2014 ) Thanos tries to use Ronan the Accuser to obtain an Infinity Stone . The film also introduces him as the adoptive father of Gamora and Nebula . Sean Gunn stood in for Thanos on set . Josh Brolin provided the performance capture for Thanos . Thanos was originally going to have a larger role in Guardians of the Galaxy , but Joss Whedon felt that the character needed to be threaded more gently . In Avengers : Age of Ultron ( 2015 ) , Thanos makes a cameo appearance in the middle of the end credits . He dons an Infinity Gauntlet and vows to retrieve the Infinity Stones himself . Brolin reprises his uncredited role . In Avengers : Infinity War ( 2018 ) , Thanos is once again portrayed by Brolin . In the film , he seeks the six Infinity Stones because he believes the Universe is overpopulated and wants to cull it by half so that those who remain may have a better quality of life . Brolin will reprise his role in the fourth Avengers movie ( scheduled US release , May 3 , 2019 ) .
A:
Thanos