Here's who could comprise the Avengers after Avengers: Endgame.
1 / 16
Professor Hulk is the last founding member who is still an active Avenger.
2 / 16
Falcon is now Captain America, and he's still an Avenger.
3 / 16
War Machine has been one of the Avengers since Age of Ultron.
4 / 16
Scarlet Witch's entire life is the Avengers, especially with Vision still dead.
5 / 16
Spider-Man became an Avenger in Infinity War and he's Iron Man's protege.
6 / 16
It's not clear if Captain Marvel is officially an Avenger but she always answers the call.
7 / 16
Black Panther never joined the Avengers and Wakanda is his main priority.
8 / 16
Ant-Man helped the Avengers saved the universe. Ant-Man and the Wasp would join if asked.
9 / 16
If Bucky is still a wanted fugitive, it might hinder his joining the Avengers.
10 / 16
Doctor Strange never joined the Avengers and his first priority is being Master of the Mystic Arts.
11 / 16
Valkyrie was left in charge of New Asgard but she could still join the Avengers.
12 / 16
Hawkeye has retired (again) but he always comes back when the Avengers call.
13 / 16
Thor is in space with the Guardians of the Galaxy. He could still come back to the Avengers.
14 / 16
Rocket and Nebula are probably considered Avengers after Endgame but they're back in space.
15 / 16