Katniss Everdeen
Katniss is the narrator and the reluctant center of the rebellion. She's a skilled hunter and survivor, but Catching Fire puts her in situations where physical skill isn't enough. She spends most of the book reacting, and her arc is about slowly accepting that she can't stay neutral.
Peeta Mellark
Peeta is strategic in ways Katniss often isn't. He uses the Capitol's media against itself, announcing Katniss's fake pregnancy on live television to generate sympathy. He volunteers for the arena knowing he probably won't survive, and he's captured at the end because the rebels prioritize Katniss.
President Snow
Snow is the Capitol's face of power. His visit to Katniss at the start of the book is the engine of the plot. He's not a distant villain, he's direct, calm, and specific about what he wants and what he'll do if he doesn't get it.
Haymitch Abernathy
Haymitch is District 12's only other living victor and Katniss and Peeta's mentor. He's been part of the rebel network without telling Katniss. His decision to keep her in the dark drives her anger at the end of the book, but it also kept her alive.
Finnick Odair
Finnick appears arrogant and shallow at first. He's actually one of the rebels' key operatives, and his loyalty to his captured lover Annie Cresta shows what the Capitol uses to control its victors. He saves Peeta's life in the arena and is one of the few people Katniss comes to genuinely trust.
Cinna
Katniss's stylist and one of her closest allies. Cinna designs her wedding dress to transform into a mockingjay costume on live television, a direct act of defiance. He's arrested and beaten in front of Katniss just before she enters the arena, which is the Capitol's way of punishing her through him.
Johanna Mason
Johanna is a victor from District 7 who acts hostile and unpredictable. She's actually part of the rebel plan and is captured along with Peeta during the extraction. Her bluntness contrasts with Katniss's caution and makes her one of the more memorable secondary characters.
Beetee and Wiress
Two older victors known for their intelligence. Wiress figures out the clock structure of the arena before anyone else. Beetee designs the lightning plan that destroys the force field. They show that survival in the Games isn't only physical.