CHARACTERS HISTORY (taken from Wikipedia):

Madge Undersee:
The mayor's daughter and Katniss's friend. She and Katniss were always thrown together at school, both being solitary in nature. Madge is the one who gives Katniss her mockingjay pin, which becomes a symbol of rebellion and is featured on every book cover. Katniss later learns that the pin had belonged to Madge's aunt, Maysilee Donner, a Tribute in the 50th Hunger Games and twin to Madge's mother, who became allies with Haymitch for some time. Katniss and Madge spend more time together during the months after the Games. Katniss is at Madge's house when she first hears of the uprisings. She and her family perish in the District 12 bombings.

Cinna:
Katniss's stylist, responsible for her public appearance. After designing the spectacular outfits of the opening ceremony, which include igniting Katniss and Peeta's costumes with synthetic fire, he nicknames Katniss, "the girl on fire." Cinna is in his first year as a stylist for the Games, and specifically requested to be assigned to District 12. His audacious designs immediately win over the audience in favor of the District 12 tributes. Despite (or perhaps because of) his professional interest in image, Cinna proves to be better than most at seeing through the superficial spectacle of the Games to their barbaric core, "using [her] outfits as a vehicle to express potentially dangerous ideas." He and Katniss establish an easy, comfortable relationship and he demonstrates a genuine concern for her well-being. In Catching Fire, Cinna dresses her for her interview in her wedding dress, as insisted by President Snow, but alters it so that when Katniss raises her arms and twirls at her interview, the white dress burns away to be replaced with a black dress of feathers that resembles a mockingjay, which has become the symbol of the resistance in Panem. Because of this, Cinna is savagely beaten "to a pulp" in front of Katniss, right before she enters the arena for the Quarter Quell, which also has the effect of unnerving Katniss before the great ordeal. We hear that he might have been tortured to death after the arena explodes. Cinna is very different from the other inhabitants of the Capitol; he does not use surgery to alter his features, wears simple black clothes, has just a thin streak of gold eyeliner (unlike other Capitol citizens), and leaves his hair its natural dark brown color, close cropped. His only concession to the Capitol's fashion style is a slight touch of gold eyeliner that brings out the gold flecks in his eyes.

Cinna was just a loveable charecter. It's was sad when he died.

Cinna

So Underrated! I Still love Cinna Though ♥

I love Madge, too. I wish she was in the films :(

Throughout all of the characters, Cinna is my very favorite. A pool was at my feet when he died. I cried sooo much. He encouraged Katniss so much and was always there for her.
My favorite of his quotes:
"Remember, girl on fire. I'm still betting on you."