The character was created by writer-artist Jim Starlin, and made his first appearance in The Invincible Iron Man #55 (cover dated February 1973).
Thanos is one of the most powerful villains in the Marvel Universe and has clashed with many heroes including the Avengers,
the Guardians of the Galaxy, the Fantastic Four, and the X-Men.
The character appeared in the Marvel Cinematic Universe, portrayed by Damion Poitier in The Avengers (2012) and by
Josh Brolin in Guardians of the Galaxy (2014), Avengers: Age of Ultron (2015), Avengers: Infinity War (2018), and
Avengers: Endgame (2019) through voice and motion capture. The character has also appeared in various comic
adaptations, including animated television series and video games.