Recently I got my hands on IGN's Avengers: Endgame poster, which they made themselves:
I can identify majority of them but not all. Who are all these 13 superheroes?
I have no idea about 1, yet going by elimination it must be Agent Hill( maybe holding a gun or something)
2 is surely Winter Soldier (though how he got his gun down in the Soul Stone World is wierd since it didn't disintegrate)
3 is surely Nick Fury. You can see the same pose in this Winter Soldier poster.
4 is Scarlet Witch, going by her dress and floating ability.
5 has to be Groot, going by his head shape and broad feet.
6 is a bit tough but I'll go with Black Panther by the body shape and pose that suggests claws.
7 is undoubtedly Young Gamora.
8 again is Spiderman with no doubt.
9 is Dr. Strange, by the cape.
10 is surely Mantis,
12 Drax and
13 The Wasp.
Shame they didn't include Falcon.