His strength and genius pull him to the top of the list of the extremely competitive games in the Battle Room. The Battle Room is a combat area in which armies of soldiers, the children, engage in fake wars. This is easy for Ender. The only problem he has is the dangerous older boy who is determined to kill ender, the teacher's who are pushing him too hard, and struggling with himself, as he is trying to be a decent human being rather than be like the "Buggers", which he sees himself turning into. (Easton 180-181)
Theme: One theme of this novel is the role of children in this world. We underestimate the power and impact children can have on this world and we should start to use children to make this world a better place and not see them as inferior to adults because some children are smarter and can think quicker than adults.
Ender - Ender is the main character in the story and he is six years old when the story begins. He is the younger brother of Peter and Valentine, at age six Ender is chosen by Colonel Graff and the International Fleet to help save mankind from the buggers. Ender is afraid of his brother and loves his sister. Wherever he goes, Ender makes things happen, and by age nine he is given his own army to command. Ender is angry at the various people who manipulate him throughout the novel.
Valentine - Ender's older sister is the only person in the world who truly loves him. She protects him from Peter, their cruel older brother. Along with Peter, Valentine takes an active interest in the world's political situation, and writing under the false name Demosthenes, she begins to exert influence over the growing situation. Valentine also writes a letter to Ender at one point that helps him get control of himself. At the end of the book, Valentine convinces Ender to go with her to colonize the bugger worlds, and she works on a history of the world on the way there. Later she travels with Ender as he searches for a new world for the buggers.
Peter - Ender's older brother Peter is a cruel and evil child, gifted in manipulation. He has the same ruthlessness that his siblings contain but without any of their compassion. Valentine is able to protect Ender as best she can from Peter until Ender goes away. Peter then decides to take an active role in world affairs and convinces Valentine to help him. Under the false name Locke he begins to gather power, working through the communication nets. After Ender's victory Peter obtains total control of earth and becomes Hegemon, the ruler of the world. His ambition is satisfied and he actually makes for a good ruler, although he is as immoral as he ever was.
Colonel Graff - Graff has unerring faith in Ender and, although he manipulates Ender, he also loves him. Graff is the head of the Battle School until Ender leaves, at which time he accompanies him until he passes off the training of Ender to Mazer Rackham. He is one of the few characters who at various times allows Ender to act like the child he is, although Graff