Avengers 5: Predicting Which Marvel Character Will Be Next To Die
7. War Machine
Following Iron Man's demise, a void has been left in the Marvel Cinematic Universe which definitely needs to be filled. Could War Machine be the one who steps up? He was definitely given the chance to shine in Avengers: Endgame, but it seems far more likely that Marvel Studios will eventually decide to introduce Riri Williams' Ironheart to replace Tony Stark.
War Machine has always been a decent enough supporting character, but never interesting enough to be a lead, and sadly not someone with the potential to fill Iron Man's armour in Avengers 5. He could certainly play a role there, but having the villain mercilessly kill Rhodey would send a message to Earth's Mightiest Heroes and make it clear to audiences that the stakes are high.
This would be similar to what happened in the Civil War II comic book when Thanos returned to Earth and murdered War Machine when The Avengers failed to anticipated how much of a threat the Mad Titan is. That seems like the perfect approach to establishing whoever Avengers 5's big bad is!