Amu Hinamori

Amu Hinamori (Or Hinamori Amu) is the main character of the series.She is portrayed as a "Cool and Spicy" girl and is greatly looked up to by her classmates. But, she thinks her outer character is too "Cool and Spicy", and asks to be reborn, which gave birth to her first three guardian characters, Ran, Miki, and Su. After her guardian eggs were born, Nadeshiko Fujisaki invites her to a tea part at the royal garden, and she is invited to join the guardians. She refuses but later changes her mind and becomes Joker's chair of the Guardians. She is special, because she has three Guardian Characters. That is why Tadase Hotori (King's Chair and also one of Amu's love interests) gives her the Humpty Lock.

Later in the series, Amu gives birth to her fourth Guardian Egg, Dia ( that is just short for diamond, her real name was never revealed.) but Dia is soon marked with an egg because Amu became depressed that Kukai Soma graduated and Nadeshiko had to leave. Utau Hoshina then became the owner of Dia and abandoned her other Guardina Character, El. Finally, Amu was able to see the radiance inside of her and Dia came back to Amu.

Character Change
Amu could Character Change with her Guardian Characters. With Ran, She receives a pink heart shaped hair clip, with Miki a blue spade, with Su a green clover, and with Dia a yellow diamond. It gives her special atheletic, artistic, domestic, abilities.