Me too thinks it may be axel. But here some reasoning for it:

White, it's all I see, - Castle Oblivion was white, also the final battleground when you fight him.
Standing in this land,
Looking inside myself, there is nothing, - He's a nobody, and maybe also refers to the thing, that he lost roxas, his best friend.
But desire and hatred. - Desire, the wish to get roxas back and hatred, that thsi is not possible.
In to my eyes he stares, - he always looks at sora, looking into his eyes, with the hope to recognize roxas
Blocking the door from view, - he won't let you pass
My weapon summoned, my element twirling, - as The Majestic and Albel said
His head shall be a prize. - He will kill sora.