Katniss Everdeen is often a main character. Since she's a central figure in the original story related to the quarter quell, she continues to be important in the fanfiction. Peeta Mellark is also frequently included. Their relationship and how it evolves during the 2nd quarter quell are popular topics in the fanfiction. Another character could be President Snow. His actions and decisions play a significant role in setting up the events of the 2nd quarter quell, so he's likely to be a key character in many fanfictions.
In a lot of '2nd quarter quell fanfiction', Finnick Odair is a main character. His charm, skills, and backstory make him an interesting addition. Johanna Mason is also often featured. Her tough - as - nails attitude and her own story arc during the quarter quell are appealing to fanfiction writers. Additionally, Haymitch Abernathy might be a main character. His role as a mentor and his knowledge of the Games are important aspects that are explored in the fanfiction, especially in relation to the 2nd quarter quell.
One of the main characters in '2nd quarter quell fanfiction' is Cinna. His creative designs and his relationship with Katniss are often delved into. Gale Hawthorne can also be a main character in some fanfictions. His feelings for Katniss and his views on the quarter quell situation add depth to the story. And of course, Effie Trinket is sometimes a main character. Her transformation and how she copes with the events of the 2nd quarter quell can be an interesting aspect of the fanfiction.