Hatori Sohma - Yenra Picture Wiki
Hatori Sohma of Fruits Basket is the Dragon of the Zodiac even though his curse form is a seahorse.
His father was the former Dragon of the Zodiac, the private doctor to the Sohma family. He is responsible for erasing memories (using a form of hypnosis that is handed down in his line of the family) of those outsiders who discover the Sohma family secret, such as Yuki's childhood playmates.
Hatori is depicted as a tall, somber man who is rarely amused by the antics of his best friends, Shigure and Ayame.