SPOILERS for Star Wars: The Force Awakens and, um, for the same movie in an alternate universe, follow.
In Star Wars: The Force Awakens, we were introduced to a new "trio" of characters. Mimicking in many ways the Luke/Leia/Han group (but significantly turning it on its head), the new stars Rey/Finn/Poe were brought in to carry the next trilogy of films.
But one of those three characters was originally not much more than a cameo.
During his first chat with J.J. Abrams, Lawrence Kasdan, and Lucasfilm president Kathleen Kennedy, actor Oscar Isaac was pitched the charcter of Poe Dameron, who would "open the whole movie," but then meet a tragic ending before his story really began, he told GQ.
"I'd done that before, set up the plot for the main guy and then die spectacularly," he said, referring to The Bourne Legacy. "I went back home, and I thought about it," Isaac continued. "Then I wrote [Abrams] and said, 'Okay. I'll do it!'"
Of course, that's when things changed. Abrams' response was, "Never mind. I've figured it out. You're in the whole movie now."
Obviously, Isaac stuck with his response, and we got some pretty great Poe Dameron scenes out of it, with more on the way in Episode VIII in just eighteen months.