How does Ender's character change throughout the novel, Ender's Game?

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As in any Bildungsroman, the main character, Ender Wiggin, matures in his understanding of the way his society works. His virtual imprisonment inside the training facility gives him a view of the “military” regiment that decreases his “obedience, and gives him the freedom to try new tactics outside his handlers’ expectations, thereby increasing his creativity and his ability to “think outside the box”, in this case the naturally human instincts to do the expected (in the final decision of the book—his saving the Bugger’s nascent colony, we see the culmination of this growth. The other growth he experiences is his similarity to his brother Peter in his potential for violenc, if not cruelty. In the final analysis, Ender undergoes social changes but not physical change. His ”character” becomes more creative, more individualistic, and more complex.