Marvel Studios has killed off a major hero in every single Avengers film and, for the most part, they've been pretty good about not bringing them back shortly after (an infuriating trope in the comic books). In The Avengers, Agent Coulson was brutally murdered by Loki, and in Avengers: Age of Ultron, everyone was left shocked when Quicksilver was gunned down by Ultron.
Loki and Gamora - along with half the Marvel Cinematic Universe - met their end in Avengers: Infinity War, while the deaths of Black Widow and Iron Man in Avengers: Endgame won't be forgotten for a long time to come. Clearly, Marvel Studios likes these team-ups to have big stakes, and when Avengers 5 is finally released, another big name will almost certainly end up dying.
There's currently no word on when that movie will be released, but chances are it's something Marvel Studios is going to use Phase 4 to build do (the eventual arrival of the X-Men and Fantastic Four in the MCU is also bound to factor into this adventure). The biggest question, though, is that when Avengers 5 is finally released in cinemas, which fan-favourite is most likely to meet their maker?
These are the most likely candidates, and you may want to get your tissues handy in preparation...