Mika Koizumi

"Yellow Four!"

Mika Koizumi is a photographer who dreams of following in her brother's footseps to photograph the wildlife in Africa.

Biography
Initially, she is hesitant to join the Bioman team. However, she is convinced when she realizes that if she does not fight, then even the animals in Africa that she loves will eventually be in danger. For someone who is hesitant to do battle, Mika is a powerful and skilled martial artist. She died by repeated Anti-Bio Particle blasts from the Bio Killer Gun used in episode 10, which she became a martyr to save the others. In the last episode, Peebo apparently forgot to recall her for some reason in the script though Peebo remembers her during the first appearance of Silver.


 * Age: 18 years old
 * Weapons: Thunder Sword
 * Attacks: Super Electron Holography, Action Flash
 * Actress: Yuki Yajima

Mecha

 * Biojet 2 (shared with Green and Blue)

Arsenal

 * Techno Brace
 * Bio Sword
 * Thunder Sword
 * Bio Machine 2

Attacks

 * Super Electronic Holography
 * Yellow Flash

Trivia

 * Mika is the first female Yellow Ranger.
 * Her English dub name is Casey, which is also the name of the Red Ranger from Power Rangers Jungle Fury.
 * Mika was written off the script because Yuki Yajima left the show out of pay issues, similar to Austin St. John, Walter Emanuel Jones, and the late Thuy Trang in the second season of Mighty Morphin' Power Rangers.
 * For Mika's last episode, her voice was dubbed over by an uncredited Mayumi Tanaka as Yuki Yajima had only completed ADR for the first nine episodes.