Who dies in the endgame?

In the climax of "Avengers: Endgame," several key characters face significant losses. Iron Man, played by Robert Downey Jr., sacrifices himself to defeat Thanos and save the universe, ultimately dying from the power of the Infinity Stones. Black Widow, portrayed by Scarlett Johansson, also dies during the quest to obtain the Soul Stone, sacrificing herself for Hawkeye and the team. These sacrifices are pivotal moments that highlight the themes of heroism and selflessness in the film.