Full Name: Jun Yabuki
Ranger Designation: Yellow Four
Weapon : Thunder Sword
Mecha : Bio Jet 2
Vehicle : Bio Machine 2
Age 19

Jun was recruited to replace Mika. At the time, she was training for the olympics as an archer. The decision to join Bioman led to conflict with her olympic dreams at first. Jun adds the Bio Arrow to the Yellow Four arsenal. Like her predecessor, she is the more action-oriented of the two ladies. Wire harness stunts, leaps, falls, swinging on cables all show that Jun is not just mere eye candy.

Actress: Sumiko Tanaka