Hatori Souma

Zodiac Animal: Dragon

The dragon of the Zodiac and the private doctor to the Soma clan. Hatori is serious and is often without a sense of humor. It's his job to erase the memories of those who discover the Soma clan secret, though it is not entirely clear if this is simply a form of hypnosis or more of a supernatural power. When his curse activates he turns into a seahorse rather than an actual dragon, because the Chinese consider the seahorse to be baby dragons and the actual name in Japanese translates to it. He is very self-conscious about his transformation in the fact that he is the "great and powerful dragon" but appears as a "seahorse". Like Shigure and Ayame, he is very tall, and he is really a nice guy upon deeper inspection.

(Source: Wikipedia)