Despite being a docile and rational person most of the time, befitting her element, Kimiko possessed a fiery temper. Often letting her pride and anger blur her better judgment, Kimiko sometimes took unnecessary risks to prove herself. Kimiko was a kind and sweet girl deep down; however, she got furious easily. She did not give up easily, either and was able to take some extreme attitudes when not controlled. She was also a good friend; however, she could sometimes control the boys of the group because she was the only girl. When she turned evil with the Yang Yo-Yo, she had bright red eyes. Kimiko has also shown to share a strong bond with her father.