Masaru Yamashita

Master martial artist Masahiro Kai is a shadow of the champion fighter and trainer he once was. After his protégé was slain in a no-holds-barred, underground fight by the incomparable Chang Lee, Kai slips into a numbing alcohol-induced stupor to try to forget the past.

Masaru Aso was the lab assistant of geneticist Doctor Mochizuki, used as one of his experiments related the creation of the Neo Organism, enabling him to transform into a grasshopper-like being called Kamen Rider ZO. He fled into the mountainside and went into a coma before he was awakened by a telepathic call two years later with an unconscious urge to protect Hiroshi Mochizuki, the son of Doctor Mochizuki.

Special Rescue Police Winspector is a "Special Rescue Police Winner" who loves peace, believes in friendship, and confronts crimes to save lives! (From the opening narration) In 1999, advanced science and technology enriched people's lives, but the damage caused when they were misused for crimes or went out of control and went out of control was also great. The Special Rescue Police Winspector (abbreviated as WSP ) was established to deal with such a situation . Their purpose is not only to investigate crimes and arrest suspects, but also to save the lives of those involved in crimes and disasters.

After the Winspector police team leaves Japan to fight crime in France, Chief Shunsuke Masaki realizes he must create a new police team to defend Tokyo from crime. He creates Solbrain – a high-tech special rescue force, expert in missions requiring rescue and firepower. Its leader is Daiki Nishio, a rookie detective who can use the Plus Up command in his car to transform into SolBraver. Other members are Reiko Higuchi, also able to use the Plus Up command to transform into SolJeanne, SolBraver's female counterpart; and SolDozer, a yellow bulldozer robot.

After the Winspector police team leaves Japan to fight crime in France, Chief Shunsuke Masaki realizes he must create a new police team to defend Tokyo from crime. He creates Solbrain – a high-tech special rescue force, expert in missions requiring rescue and firepower. Its leader is Daiki Nishio, a rookie detective who can use the Plus Up command in his car to transform into SolBraver. Other members are Reiko Higuchi, also able to use the Plus Up command to transform into SolJeanne, SolBraver's female counterpart; and SolDozer, a yellow bulldozer robot.