Character Voice: Juri Takita
She is a Chinese-made humanoid robot, created by Professor Mei Ling Hua, a colleague of Kira Daidohji. Mei-Fang was programmed with 4,000 years’ worth of Chinese recipes and a wide array of martial arts knowledge. Although Mei Ling Hua encoded her with a personality, she wishes Mei-Fang would smile a bit more often. After her creator mysteriously left Tokyo, Mei-Fang left the laboratory in China to locate her.
Mei-Fang is a marvel of Elemental Science. Professor Mei Ling Hua engineered Mei-Fang's body out of a power Elemental substance known as "ether." Her bone structure is made of an ivory-ether frame, connected to an Elemental engine. Kira Daidohji is responsible for inventing the circuits used for this. Mei-Fang’s suit was woven from ether-fibers, making it both unique and very expensive. Heart’s ribbon, Saki’s hair band, Kamui’s clothing, Konoha's scarf, and Yoriko’s hat and robe are also made from ether-fibers. In order to find her missing creator, Mei-Fang decides to aid Kira, despite of her ambitions of world domination.
Source: Wikipedia, "List of Arcana Heart characters," available under the CC-BY-SA License.