Misa by Tetsuro Araki
Tetsuro Araki is an Anime Director that works for Madhouse. He first debuted as a director doing Otogi-Jushi Akazukin, but has been in the industry previously working on such favorites as Gungrave, and Di Gi Charat. He is also of course the Director of Death Note.
The character of course is Misa from Death Note.