Peeta and Johanna
President Snow
President snow
the Capitol (the government, mostly President Snow)
President Snow is the main antagonist of the book Catching Fire, but to Katniss, the entire Capitol and every one of her fellow tributes is an enemy. They are in the way of her saving Peeta.
In Catching Fire? Katniss did
Roses and blood
A old man who doesnt like Katniss for what she did with the berries
The quarter quell, snow and kattness, but mostly the quell
Snow wanted to kill Katniss to prevent a rebellion.
The title Catching Fire is referring to the rebellion against the Capitol. The first chapter is called The Spark, this is referring to the people of Panem, as they just need a 'spark' to set them alight. President snow refers to Katniss as this spark, saying that she has 'provided a spark that, left unattended, may grow to an inferno that destroys Panem.'
If you are talking about the book Catching Fire, that would be President Snow, warning Katniss and threatening her.
Katniss and Peeta go back into the Games. Snow wants them both killed but Peeta has a plan to have Katniss survive.