-Jackson talking about Iuvartus in "An Ice Cold Killer - The 66th Hunger Games"
Iuvartus Templesmith is the main antagonist and the Head Gamemaker in The 66th Hunger Games to The 69th Hunger Games. He is also described as a kid that he was very spoiled. His father is Didius Templesmith. It's also said that he was a genius when it came to making mutts and arenas, as he put in lots of work to make the Games very exiting.