Who played thanos in gardians of the galaxy?
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Who played Thanos in Guardians of the Galaxy (TV series)?
Isaac C. Singleton Jr.
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Who played Thanos in Guardians of the Galaxy (2014 film)?
Josh Brolin Sean Gunn
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Who played Thanos in  Guardians of the Galaxy: The Telltale Series?
Jake Hart
Guardians of the Galaxy
https://en.wikipedia.org/wiki/Guardians%20of%20the%20Galaxy
The Guardians of the Galaxy is a fictional superhero team appearing in American comic books published by Marvel Comics. 
Guardians of the Galaxy
Guardians of the Galaxy (retroactively referred to as Guardians of the Galaxy Vol. 1)[4][5] is a 2014 American superhero film based on the Marvel Comics superhero team of the same name. 
Guardians of the Galaxy (film)
The MCU began building towards Thanos in the first Avengers film, in which Damion Poitier portrayed the character in an uncredited cameo appearance.[7] In May 2014, Josh Brolin signed a multi-film contract to portray the antagonist, debuting in Guardians of the Galaxy (2014).
Thanos (Marvel Cinematic Universe)
Thanos is a supervillain from the Marvel Cinematic Universe (MCU) film franchise, based on the Marvel Comics character of the same name. Portrayed primarily by Josh Brolin, the character is a central figure in the "Infinity Saga", appearing in five films including Avengers: Infinity War (2018) and Avengers: Endgame (2019).
Thanos (Marvel Cinematic Universe)
Guardians of the Galaxy is an American animated television series based on the Marvel Comics superhero team of the same name. It is produced by Marvel Animation. The series airs on Disney XD. It premiered on September 26, 2015, as part of the Marvel Universe on Disney XD.
Guardians of the Galaxy (TV series)
Guardians of the Galaxy: The Telltale Series is an episodic graphic adventure video game series developed and published by Telltale Games. Based on Marvel Comics' Guardians of the Galaxy comic book series, the game's first episode was released on April 18, 2017.
Guardians of the Galaxy: The Telltale Series
The Guardians of the Galaxy is a fictional superhero team appearing in American comic books published by Marvel Comics, in which Thanos is a supervillain character. In the 2014 Guardians of the Galaxy film based on the Marvel Comic, Damion Poitier portrayed the character in an uncredited cameo appearance, but in May 2014, Josh Brolin signed a multi-film contract to portray the character of Thanos. Guardians of the Galaxy is also an American animated television series based on the Comic that premiered on September 26, 2015 on Disney XD, in which Isaac C. Singleton Jr. is the actor behind Thanos' character. Guardians of the Galaxy: The Telltale Series is an episodic graphic adventure video game series developed and published by Telltale Games, also based on the comic, which was released on April 18, 2017 and features Jake Hart as Thanos.