Marvel fans put up billboards in LA for Robert Downey Jr's Tony Stark aka Iron Man; are we going to see his return? — deets inside

Robert Downey Jr's Avengers: Endgame, which was his last film as Iron Man, is currently the highest grossing film at the box office. Directed by Russo Brothers, the film also stars Chris Evans, Chris Hemsworth, Mark Ruffalo and others in pivotal roles.