Mikeru

Michel (Mikeru) resembles an angel and is the one who launched a personal vendetta against the Mermaid Princesses after learning their relations with the human world. Although he is strong enough to resist any song the Mermaid Princesses would dish out against him until the finale, he is cursed with a weak body. He steals both Kaito's memories and Seira's heart in order to keep himself alive. In the manga, it is revealed that Michel is under the control of Fuku and is very good and gentle at heart. Michel is an ancient angel and is disgusted by what humans had done to the Earth that him and the other angels created. This explains why he needs Michal's body, Seira's heart, the heart of a mermaid princess, which means a fairly large amount of power, and Kaito's memories because he is a very powerful prince whose powers may rival those of the mermaid princesses. Michel believes that "angels" and mermaids are superior beings to humans because both species understand the importance of the Earth and each have powers, in one form or another.