Michai(Mee-kī) is the leader of the Diamond Rocks. She is called the fighter because she takes the job as heroes seriously than the others. She is a smart girl and would usually get honors every year in school.

Her powers are White magic, Flight and Transformation magic. Her special is "Diamond Emerald Splash".

She loves hanging out with her friend which is the Diamond Rocks. Her best friends are Rainbow and Waddles.