What is Petta Mellark?

A guy who went through the Hunger Games. Declared his love for Katniss Everdeen. He became victor after his first games. He was taken by the capital when the Quarter Quell was demolished by Katniss and her arrow. He was hijacked and then rescued by the rebels. He slowly came back to Katniss and then 5, 10, 15 years later they had 1 girl and 1 boy.