Nebula

The period after the population returns, covering the reorganized post-Endgame world.

The period beginning with Thanos' Snap and ending with the restoration of the vanished population.

The period from the Avengers' formation through the years before the Snap.

The final battle against Thanos and his army after the Avengers' time heist.

Thanos uses the Infinity Stones to erase half of all life.