Avengers: Infinity War | Behind-The-Scenes Chadwick Boseman, along with the other actors from Black Panther(2018) portraying Wakandans, improvised their war chants on set ahead of the battle in Wakanda. Despite both Black Panther and Infinity War filming at the same time, the Russos were not aware of the chants, as they had not yet seen footage from Black Panther, and felt the moment was “incredibly cool”. At the recommendation of Chris Hemsworth, writers Christopher Markus and Stephen McFeelyco

The Avengers: Infinity War cast performs "The Marvel Bunch"! #Tonight10 #FallonTonight #FallonFlashback Robert Downey Jr Chris Hemsworth Chris Pratt Chadwick Boseman Anthony Mackie Tom Hiddleston | The Tonight Show Starring Jimmy Fallon