Board Thread:Questions and Answers/@comment-25221943-20170412192301/@comment-1031724-20170429233512

Everywhere I've been to says it will be Thanos.

There are only four villains I know of from the comics that are powerful enough to overtake Thanos as the villain of Avengers 4 if he should die in Infinity War: Dormammu, Magus, Chthon, and Galactus.

Galactus is out coz he's Fantastic Four and Fox owns the rights to his character.

Magus is the alter-ego of Adam Warlock, who is confirmed to make his entrance in Guardians of the Galaxy 3 after Avengers 4.

Chthon is weaker than Thanos in the films, and dead, coz the alias he used in the comics is the only name he goes by in the films - The Other.

Dormammu can't be a main villain unless he's got minions in contact with him from outside the Dark Dimension, coz if he's unleashed, he'll just destroy Earth and fuse its particles with the Dark Dimension right off the bat without screwing around, just like he was doing in Doctor Strange. So, he has to stay inside the Dark Dimension until there's a big fight with him.

So, it will be Part 2 to Infinity War, it'll just have a different title that would spoil the plot of Infinity War.