I voted for Aslan, because He is the Great Lion. He is the one who terrifies the White Witch with His mighty roar. He is the innocent who willingly dies on the Stone Table for another's crimes. He is the one who brings the statues held captive in the Witch's castle back to life with His breath alone. He is the one who brings spring to Narnia. He is central to the stories of all the other characters that I love so much, and He is the one who saves them all
After Aslan, Edmund is my favorite LWW character. I can relate to his deep fear of being overshadowed by his other siblings, and the rivalry that he feels for Peter. It can be hard to feel like your siblings are better than you, or more loved than you, and that your older brother is bossing you around all the time or always judging you. Those, I think, are very terrible but very human emotions.
At the same time, I think that his falling for the temptations of the White Witch is written in a very believable way. I can understand why Edmund, who always feels inferior to his siblings (especially, in my opinion, to Peter) would want to believe that the White Witch would make him king after her and that he could have his siblings as his servants. Then, of course, there is the very human temptation of eating food offered by evil incarnate that may seem nourishing but is not and is very addicting. Edmund was willing to, basically, give his soul away from Turkish Delight and vague promises of power, and that is such a human action.
However (and this might be what I love about Edmund most), despite his human folly and frailty, he can be very strong and wise. He is the one who goes after the Witch's wand, after all, which, to me, suggested that he, because of what he had suffered, had the deepest understanding of the awful power the Witch had because of that wand. We are also told that, in the end, he becomes extremely wise in counsel, and, in my head canon (which I think is supported by Edmund's behavior in VotD and Horse and His Boy) his justice is mixed with a mercy he could understand because of what Aslan did for him on the Stone Table. If it makes sense, Edmund's wronged sense of justice (seen in his indignant thoughts about Peter, for example, when he goes to the Witch's castle) eventually becomes a true sense of justice tempered by mercy because of what he suffered at the Witch's hands and because Aslan endured the punishment that (by the law) he should have suffered for being a traitor.
So, in short, I think Edmund grew the most because of his experiences in Narnia, and, therefore, I would place him as my favorite LWW character after Aslan. Edmund has always provided me with the hope that I can change my ways and be a better person, and I'm grateful for that
