15 Mar – Joe and Anthony Russo had to admit that James Cameron is king when it comes to the box office numbers, after the filmmaker's 2009 sci-fi film, "Avatar" surpassed their 2019 movie, "Avengers: Endgame" to be the current all-time highest grossing film worldwide. On 14 March, the Russo Brothers posted a piece of art to celebrate Cameron's success, which showed the word Avengers: Endgame transforming into the word Avatar, and tweeted, "Passing the gauntlet back to you [James Cameron]."