Quail to Mockinjay

Character Arc as defined by Robert McKee, is the process which "...not only reveals true character, but arcs or changes that inner nature, for better or worse, over the course of the telling."

If you can use just one element from this season's newest, Hunger Games: Catching Fire, use the character arc.

The ending and final image -

"The Hunger Games: Catching Fire ends on Jennifer Lawrence’s face: Katniss learns that District 12 is no more, and that they’re heading to the secretly resurrected District 13. Katniss goes from frightened and sad to angry and determined. She is the Mockingjay."

From Producer Nina Jacobson - “I love the choice Francis made to end on that close-up of Jen,” she said. “I think it’s so bold. And she’s one of the few actors who can pull off a moment like that: To let the resolution that you’re going to get be all emotional and in her face is, I find, really powerful. But we were really mindful of making people feel like a journey had been completed. That as a character she had advanced.”

Were there any other characters that experienced the arc?

Fear of the Past

Director Alfonso Cuaron's Gravity stars Sandra Bullock as Dr. Ryan Stone, a scientist on a space shuttle mission headed by astronaut Matt Kowalsky (George Clooney), a talkative, charismatic leader full of colorful stories that he shares with his crewmates as well as mission control. As the two are on a space walk, debris hits the area where they are working, and soon the pair finds themselves detached from their ship and stranded in space. While figuring out what steps they can take to save themselves, Stone grapples with a painful past that makes her consider giving up altogether. Gravity screened at the 2013 Toronto International Film Festival. ~ Perry Seibert, Rovi
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Cuaron's spiel on the importance of character in film:

In Gravity nearly everything is a metaphor for the main character. The way I tend to approach a film is that character and background are equally important; one informs the other. Here, Sandra Bullock is caught between Earth and the void of the universe, just floating there in between. We use the debris as a metaphor for adversity. She’s a character who lives in her own bubble, and in the film she’s trapped in her space suit. She’s a character who has trouble communicating, and here she literally starts having communication problems. She’s a character who needs to shed her skin to move on, and in the film she needs to get out of her astronaut suit because it’s suffocating her. In the end, the story is about rebirth as a possible outcome of adversity. Full interview with Wired.com