Himiko Day (Japanese: Himiko Godai 御代 ヒミコ Godai Himiko) is a character in B-Daman Fireblast. She is the matriarch of the Day family, being the wife of Greg, and the mother of Kamon, Aona, and Roma.
Like the other members of her family, Himiko has a hot temper when something upsets her. Otherwise, she is outgoing, caring to her children (sometimes to the point of embarrassing them), and a loving wife to Greg. She is also shown to be a terrible cook, a direct contrast to her daughter. Himiko is also familiar with Samuru's father, as she is one of his colleagues in archaeology. She also calls Garuburn "Garuby", much to the B-Daman's embarrassment.