Mark Ruffalo says Avengers: Endgame will leave fans ‘grieving’

Mark Ruffalo and Sunrise Coigney were among the celebrities attending the Avengers: Endgame premiere (Jordan Strauss/Invision/AP)
Mark Ruffalo and Sunrise Coigney were among the celebrities attending the Avengers: Endgame premiere (Jordan Strauss/Invision/AP)