In The Avengers (2012), Black Widow didn't whisper anything specific to Hawkeye at the very end, but earlier, she told Loki she has "red in her ledger" and wants to wipe it clean, a motivation tied to her past as an assassin, which Hawkeye facilitated by sparing her life, as revealed in Captain America: The Winter Soldier. The moment fans often recall is her tricking Loki, not a secret exchange with Clint, though she did get him to help her, hinting at their shared past and trust.
In Avengers (2012) Black Widow tells Hawkeye that she's been compromised. She's got red in her ledger and she wants to wipe it out. She says this in reference to her conversation with Loki.
So, it is an object that Clint and Laura didn't want destroyed (or else they would have done that), but wanted to keep in a secure location, likely to keep out of the hands of the wrong people.
Agent of S.H.I.E.L.D.
Laura met and fell in love with Clint Barton, whom she married. Both Laura and Clint were S.H.I.E.L.D. agents, codenamed Agent 19 and Hawkeye, respectively.
Lila Barton is only daughter of Clint Barton/Hawkeye and Laura Barton. She's the sister to Cooper and Nathaniel Barton. She lives at the Barton Family Farm with her family. Lila and her family are not in any government files, which is why the Barton Family Farm is used by the Avengers as a place to hide and lay low.
In the last episode, Clint manages to retrieve the watch and gives it to his wife, telling her to take better care of her stuff. This indicates that Laura is the owner of the Rolex.
Lucky defends Avenger Clint Barton, AKA Hawkeye, in a key moment, saving his life. In nearly dying for the hero, he in turn saves Lucky's life. Lucky becomes the Avenger's companion and bonds with his protégé Kate Bishop while keeping the peace on the streets of his home in New York City.
Marvel's gone a step further and introduced two characters on different sides of the deaf spectrum. Actor Jeremy Renner, who is not deaf in real life, is cast as Clint Barton, aka Hawkeye, a hard-of-hearing individual who wears a hearing aid.
Johansson's contract with Marvel, of course, did not account for any compensation based on streaming sales. Disney's instruction that Marvel release Black Widow to both theaters and streaming on the same day, Johansson claims, forced Marvel to breach its contract with the actor.
Namor is revealed as the most hated Avenger, struggling with a violent legacy and self-loathing. Namor has been both a hero and a villain, causing controversy throughout his long history. In Namor #1, he must face his past and salvage his legacy while navigating prison and public disdain.
Perhaps one of Black Widow's most famous quotes, “I've got red in my ledger” is a nice nod to her past as as assassin in the infamous Red Room.
Because no funeral that Endgame would have been able to show would have lived up to the one we can now imagine, knowing what we know after Natasha's standalone. Nat's funeral wouldn't have been a respectful private gathering, it would have been an international event.
The first F-bomb in the MCU was dropped by Chris Pratt as Peter Quill (Star-Lord) in Guardians of the Galaxy Vol. 3 during a scene where he tells Nebula to "open the f***ing door," a moment that broke the long-standing PG-13 language barrier for Marvel Studios films and was partially improvised by Pratt.
At one point in his comics history, Hawkeye was 80% deaf in the aftermath of a big battle. He was held captive by a villain named Crossfire, and while fighting another villain named Mockingbird, he bit down on a sonic arrow, which stopped the fight but permanently damaged his hearing.
Because Barton had sacrificed himself in Avengers #502, Captain America gifted her the Hawkeye mantle.
She is soon revealed to be the highly trained Agent 19 of S.H.I.E.L.D., taking the moniker Huntress in Marvel Super Action #1 in 1976, and Mockingbird in Marvel Team-Up #95 in 1980, before going on to be a member of several Avengers teams, briefly marrying and subsequently divorcing Clint Barton/Hawkeye.
Jensen Ackles (Hawkeye): The actor was the original choice for the role of Hawkeye. But a contractual obligation to star in Supernatural prevented him from taking the role, and it ultimately went to Jeremy Renner.
Katherine Elizabeth "Kate" Bishop is the daughter of Eleanor Bishop who idolized Hawkeye after he saved her life during the Battle of New York, which inspired her to master archery.
He knew Tony for a long time. They also fought in a lot of battles together. They were like brothers. On top of that he had all the previous things happened which probably made him even more sad when Tony died.
Is Red Skull the son of Captain America? No way he is the son of Captain America in the MCU. But…. An alternate iteration has since been seen as the Ultimate Marvel equivalent of Red Skull, the secret son of Captain America (Steve Rogers) and Gail Richards.