Neville Longbottom

Neville has been perhaps one of the most dynamic characters in this whole book even if he did not show up till the last few chapters. Neville has been dealing with the desire to avenge his parents as well as dealing with his own inadequateness as a wizard throughout all the other books. Only in this final installment do we now find Neville in the forefront of the fight. He became the critical corner stone for the opposition at Hogwarts and he stayed there still even after he had become an outlaw to the place. Despite all the damage the Carrows had done to him he still took it and did everything he could to fight back both on his own and with the help of the D.A. His fight culminates with his understanding of what he had to do in order to help Harry when he showed up as well as his skills in the actual battle of Hogwarts. Neville learned to play to his skills in Herbology and he used those to help him fight, but the true turning point when we see Neville becoming a true leader is when Harry meets him on the empty battle field helping carry off both the injured and the dead. That takes abilities that Neville had never shown before and helped him develop the courage and loyalty that it must have taken when he stood up against Voldemort and drew the sword from the hat and was able to kill the great snake with it. Neville's transformation had become complete and had fulfilled his life long wish of avenging his parents.