With directors Joe and Anthony Russo officially lifting the ban on spoilers from Avengers: Endgame, star Jeremy Renner has shared his own behind-the-scenes video teasing a look at his character's transformation in the film.

The throwback video Renner posted on Instagram shows the actor eating lunch in the production's makeup trailer as he is readied for Clint Barton's new mohawk.

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In the prologue to the film, Clint undergoes the drastic transformation after his family is disintegrated by Thanos' use of the Infinity Gauntlet to wipe out half of all life in the universe.

Following the death of his family, Clint takes on the alter ego Ronin and fights across around the world with extreme prejudice before being recruited back into the Avengers five years later by Black Widow.

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Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr. as Iron Man, Chris Evans as Captain America, Mark Ruffalo as Bruce Banner, Chris Hemsworth as Thor, Scarlett Johansson as Black Widow, Jeremy Renner as Hawkeye, Brie Larson as Captain Marvel, Paul Rudd as Ant-Man, Don Cheadle as War Machine, Karen Gillan as Nebula, Danai Gurira as Okoye and Bradley Cooper as Rocket, with Gwyneth Paltrow Pepper Potts, Jon Favreau as Happy Hogan, Benedict Wong as Wong, Tessa Thompson as Valkyrie and Josh Brolin as Thanos. The film is in theaters now.