The Marvel Studios superhero movie "Avengers: Endgame" at the weekend overtook the $2.789 billion record set by Cameron's 2009 sci-fi film "Avatar" to bring its global total to $2.790 billion, according to box-office data.
“I see you, Marvel,” Cameron tweeted, using a greeting in the Na’vi language featured in "Avatar" over a graphic of Iron Man surrounded by Pandoran woodsprites.
"Congratulations to Avengers: Endgame on becoming the new box-office king,” the director added.