I can't really decide between Natsu, Gray, Lucy and Erza, though I guess it'd be one of the boys by default... At any rate, there are lots and lots of cool characters in Fairy Tail. That's the reason I like it so much.
“There's power in the night. There's terror in the darkness. Despite all our accumulated history, learning, and experience, we remember. We remember times when we were too small to reach the light switch on the wall, and when darkness itself was enough to make us cry out in fear....”
~ The Dresden Files
★ ★ ★
If I have to choose one, I would definitely say Levy. She is soooooooo cute and, although she is not one of the main characters, I think she has a huge potential to show afterwards. Also, she MUST BE with Gazille, please! They 're such a lovely couple. :3