Mika Koizumi

Mika Koizumi is the original Yellow Four. A dedicated photographer, she is initially hesitant to give up her own life and accept her destiny as part of the Bioman team.

Once she joins the fight, Mika proves to be fierce, independent, and action-oriented. She brings a tough, no-nonsense edge to the team before her tragic death at the hands of Doctor Man's Bio Killer Gun.

Mika holds a major place in Super Sentai history as the first female Yellow Ranger. Her abilities include Action Shooting, Strobe Flash, and Choudenshi Holograph.