Captain America travels through time to return the infinity stones to where they belong, then he returns to the end of WWII to resume his life before he was frozen. Later appears as an old man to give his shield to Falcon.

Tony Stark dies

Black Widow dies.

Thor joins the guardians of the galaxy. (Asguardians of the galaxy)

Banner/Hulk have reconciled and become Professor Hulk, who is now the only OG Avenger remaining.