Lucy - Lucy is described as a very perceptive and loyal person. She has a keen sense of emotion and imagination.
Susan - Susan was intelligent as a child, but did not have the same curiosity, imagination, or bravery her siblings did.
Peter - Peter is the oldest of the four children who travels to Narnia. Naturally, he is the leader of the group and is notable for his bravery and good judgment.
Edmund - Edmund had been a spiteful and mean-spirited boy, but throughout the series it is shown that Edmund is loyal, courageous, logical, and mature.