Ralph
Main protagonist. Calls the first meeting and is elected to lead the group. Says they need to worry about shelters and then food. Appoints jack to lead the hunters and there job is to find meat and keeps the fire going.
Jack
Main antagonist. Is the head of his choir group and leads the hunters. Only worries about hunting and not keeping the signal fire going which angers Ralph.
Piggy
Ralph's second in command. Has asthma and is picked on all the time. Killed by a falling rock pushed by Roger while Ralph and Jack were arguing.
Sam and Eric
They are twins stay on Ralphs side for most of the book. Claims to have seen the beast. They are always together. They are one character in the book.
Simon
Is viewed as a nice guy. Always helps the little kids and stayed with Ralph to help make the shelters for the boys. Would reach into the trees to grab the ripe fruit for he littluns. Was killed by Jacks tribe while he was explaining that the Beast Sam and Eric saw was actually a dead Pilot that had landed on the island.
Roger
Second in command to Jack. Almosts challenges Jacks authority at the end of the book when he brushes past his shoulder. to get Sam and Eric