Choudenshi Bioman

 is Toei Company's eighth installment in the Super Sentai metaseries. Its 51 episodes aired on TV Asahi from February 4, 1984 to January 26, 1985 with a movie being released during the show's initial run.
It is the first Super Sentai series to have two females in the main five as well as the first Super Sentai series to have a female Yellow Ranger. The international English title is listed by Toei as "Bioman". It was dubbed into English in the Philippines in the late 80's.
Synopsis.
The once prosperous is destroyed after a world war erupted over the use of a scientific discovery called "Bio Particles". The , which sought to use Bio Particles for peaceful purposes, sends the giant robot Bio Robo and an assistant robot named Peebo to prevent the same tragedy from happening on Earth. Bio Robo arrives in 15th century Japan, where it showers Bio Particles on five young individuals. Five centuries later, the descendants of these individuals, infused with Bio Particles, are chosen by Peebo and Bio Robo to become the Bioman team to protect the Earth from the Neo-Empire Gear, an organization led by mad scientist Doctor Man.
Characters.
Bioman.
The Bioman are the descendants of five people showered with Bio Particles centuries ago who were spirited way by the Bio Robo during Gear's initial attack to obtain the from Peebo to become the Bioman. To transform individually they call their color and number and to transform as a group they call "Bioman". Along with their , a versatile sidearm with sword, dagger, and blaster modes, the Bioman have a variety of team attacks that are executed after their Bio Brain Computers are synched up. Among their team attacks are and .
Neo-Empire Gear.
The was founded and led by the cyborg Doctor Man, from his Neo-Cloud fortress at the South Pole. Gear's forces believe themselves to be a technologically advanced society with the right to rule Earth.
Jyunoids.
The are mechanical monsters that fight the Biomen and support the Big Three in their battles.
Silva.
 is a robot who was given the Anti-Bio Particles as a power source and with a built-in arrow launcher in his elbow, from Planet Bio built by the with the objective to terminate anything with Bio Particles. However, Silva malfunctions and uses his mecha to destroy Planet Bio. Tracking the Bio Particle signature of Peebo and Bio Robo, Silva arrives on Earth to complete his objective. Though an arch-enemy of the Bioman, Silva is also at odds with Gear who desire to utilize Balzion's technology for their own use. Losing his robot, Silva retrieves Balzion while killing Mason. In the end, Silva is destroyed when Balzion was defeated by a sudden charge of Bio Energy from Bio Robo.
Movie.
A movie version of "Chōdenshi Bioman" premiered at the Toei Manga Matsuri film festival on July 14, 1984, the same day episode 24 aired. It was directed by Nagafumi Hori and written by Hirohisa Soda, who both worked on the series. The events of the movie are set somewhere between Episodes 11 and 31 due to the presence of Jun Yabuki as Yellow Four and the appearance of all five Beastnoids.
International broadcasts.
"Bioman" aired in the Philippines on ABS-CBN in 1987–1989 and IBC-13 in 1993–2000 – making it the third Sentai show to be broadcast there since "Battle Fever J" and "Taiyou Sentai Sunvulcan". It was also the last "tokusatsu" title in the Philippines to be dubbed in English, as "Space Sheriff Shaider" – which was aired on the same year – began the trend of dubbing "tokusatsu" in Filipino. In recent years, "Bioman" was re-broadcast and re-dubbed in Filipino. The series also aired on Channel 7 in Thailand. It was aired in South Korea under the title "Space Commando Bioman".
The series was very popular in France, being first aired in Canal + in 1985, every Saturday at 12:30, and later on TF1, on the programme Club Dorothée, from September 2, 1987 with singer/actor Bernard Minet recording a French version of the show's theme for that country. It also was released dubbed on video in Greece.
In 1986, Haim Saban produced a pilot episode of an American adaptation of the series simply titled "Bio-Man".