Marvel's post-'Endgame' anger-management issue: The Incredible Hulk's future

Most of the core Avengers had their story arcs come to dramatic conclusions in "Avengers: Endgame," but not Mark Ruffalo's Incredible Hulk. Marvel Studios' biggest blockbuster yet leaves fans with "Professor Hulk," an iteration of the character from the comic books that combines the brains with the muscles, opening the door for several different story options in new Marvel movies.