General Tetsuzan Kurama General Tetsuzan Kurama
The chief of the special science office of the National Defense Ministry who established the Fever team. He is a master of traditional Japanese swordsmanship.

Keiko Nakahara Keiko Nakahara
One of the operatives that runs Big Baser.

Tomoko Ueda Tomoko Ueda
The other operative that runs Big Baser.

Masaru Nakahara Masaru Nakahara
Keiko's little brother.

Yuki Ueda Yuki Ueda
Tomoko's little sister. She was used by Egos in episode 27 to find Battle Fever's base.

Kyutaro Kyutaro
Robot mynah bird built by Tetsuzan as a present. Often had insight into the situation. Revealed in episode 51 to have a freezing ray built in.