Jack

Jack is the main antagonist of the Lord of the Flies. His second in command is Roger. He likes to hunt and is the leader of the choir group that was stranded on the island. He symbolizes savagery in the book.

He argues with Ralph on what their priorities are. While Ralph wants to get rescued, Jack only wants to hunt and kill. Later in  the novel he splits the group and becomes leader of the Hunters. There he is cruel and bloodthirsty. He orders torture and intimidates many of Ralph's group to join his. At the end of the book his desire is to kill Ralph.

Description
"Inside the floating cloak he was tall, thin, and bony; and his hair was red beneath the black cap. His face was crumpled and freckled, and ugly without silliness. Out of this face stared two light blue eyes, frustrated now, and turning, or ready to turn, to anger."

Even though in the 90's version of the movie he was blonde, he really had red hair and was not that ugly.