A possible concise summary is:
This is a video script about the times when Marvel actors improvised their lines or actions in the movies. The video gives examples from different Marvel franchises, such as Avengers, X-Men, Spider-Man, Thor, and others. The video also explains how the improvisations added humor, emotion, or character development to the scenes. The video ends by asking the viewers to comment on their favorite improvisations and to subscribe to the channel.
Here are the key facts extracted from the text:
1. The famous post-credits shawarma scene in "The Avengers" was improvised by Robert Downey Jr.
2. Hayley Atwell's touch on Chris Evans' chest as Captain America was an unscripted, genuine reaction.
3. Tom Hardy improvised a scene with a lobster tank in the movie "Venom."
4. Robert Downey Jr. hid snacks on set during "The Avengers," which led to an improvised moment in the film.
5. Taika Waititi allowed for a significant amount of improvisation in "Thor: Ragnarok."
6. Chris Pratt suggested the "Star-Lord" name drop scene in "Guardians of the Galaxy."
7. The phrase "He's a friend from work" in "Thor: Ragnarok" was suggested by a child from the Make-A-Wish Foundation.
8. Tom Holland improvised some of Spider-Man's lines during his fading scene in "Avengers: Infinity War."
9. Robert Downey Jr. added the word "liar" in a heated scene with Captain America in "Avengers: Endgame."
10. The phrase "I love you 3000" in "Avengers: Endgame" was improvised by Robert Downey Jr.
These are brief summaries of some behind-the-scenes improvisations by actors in Marvel movies.