Knever

Chosen answer: He speaks in the book, actually, such as explaining that he flipped a coin to decide if he would participate in the game. He never felt emotion because of damage to his brain before he was born, which is why he's such a psychopath, but he didn't volunteer for the game. He was just part of the class that got selected, and had been forever. He actually had his own gang, who he kills at the beginning of the book.