Agents of S.H.I.E.L.D.

Agents of S.H.I.E.L.D. The Unseen Heroes Of Marvel

#1. Coulson was the one who designed Captain America's suit in the avengers
#2. Coulson sacrificed himself trying to stop Loki
#3. Coulson's "death" was what caused the avengers to finally become a real team and defeat the enemy.
#4. The mouse hole , the device used by Nick Fury to escape the Winter Soldier. Later used by Agent Hill so that she, Captain America, Falcon, and Black Widow could escape from hydra. That devise was actually designed by Fitz. It could be said that Fitz indirectly saved the lives of four avengers, including Captain America! Fury, Captain America, Black Widow and Falcon were the ones who stopped hydra and saved millions of people. So Fitz also indirectly saved millions of people. And while this was all happening, Fitz was trapped at the bottom of the ocean, sacrificing himself to save Simmons.
#5. At the end of Captain America the winter soldier Fury says that he has to go after "some rats that didn't go down with the ship." And it was the agents of SHIELD, With the help of Fury who defeated the last of hydra.