A recent survey on the female-centric Japanese website called My Navi Woman was held and they asked their readers: Who is the most tsundere girl in anime?
If you don’t know what a tsundere means, in general it is known to mean a character who alternates between acting mean or aggressive, and acting loving and kind. It has taken a much broader definition however as it could also mean a person who has trouble expressing love and simply expresses it by behaving harsh or rude, or the original meaning of being a character who starts off mean but slowly becomes more loving and kind throughout the show.
Here are the results:
10. Asuka Langley Soryu (Neon Genesis Evangelion)
8. Louise the Zero (Zero no Tsukaima)
7. Nagi Sanzenin (Hayate the Combat Butler!)
5. Haruhi Suzumiya (Suzumiya Haruhi no Yuuutsu)
3. Hitagi Senjougahara (Monogatari series)
2. Mikoto Misaka (Toaru Majutsu no Index / Toaru Kagaku no Railgun)