Every 50,000 years, the life of a Creation King (Sousei-Ou) who ruled the entire universe will come to an end. Before that happens, a new Creation King must be decided upon. The job to do so lies in the hands of Gorgom, a dark and evil organization.
19 years ago, on a day of a solar eclipse, Minami Kotaro and Akizuki Nobuhiko were born. 3 years later after the solar eclipse, Kotaro's parents were murdered by Gorgom. The Akizuki family took Kotaro in and treated him like their own family member. Kotaro and Nobuhiko grew up together like brothers. On their 19th birthday, Gorgom made an appearance once again and abducted Kotaro and Nobuhiko.
In order to do so, Gorgom had to operate on both Kotaro and Nobuhiko to erase their memories. The present Creation King gave Gorgom two magical Kingstones. Both Kingstones were to be operated into Kotaro and Nobuhiko to fully changed them into cyborgs.
After the operation, both young men were officially called 'Century Kings' (Seiki-Ou). The main deal was to make both Century Kings fight each other. The winner would succeed the Creation King. Professor Akizuki, Nobuhiko's father, who also happened to be one of Gorgom's scientists, arrived at Gorgom's lair. did not want Gorgom to erase away his children's memories of him. However, the operation still continued. Professor Akizuki interfered in the operation, giving the perfect opportunity for both Kotaro and Nobuhiko to escape. Kotaro managed to escape but not Nobuhiko, who got electrocuted during the interference of the operation. Kotaro had to escape, leaving his foster father and Nobuhiko behind. A Kingstone had already been fitted into Kotaro's body.
So, the entire story was about the evil Gorgom trying to get back the Kingstone from Minami Kotaro. Our hero soon realised that the Kingstone in his body had special and unique powers. Abandoning the name Black Sun, a term which was given by Gorgom for his cyborg form, Kotaro called himself Kamen Rider Black, Kotaro made full use of the Kingstone's powers to transform himself into a masked cyborg. With that power, he battled Gorgom and its monsters and hoped that one day, he could rescue his brother, Nobuhiko.
The very first transformation
The above are pictures of Kotaro's first ever transformation into Kamen Rider Black. After he was being smashed through a concrete wall by High Priest Darom's telekinetic powers, he slowly got back to his feet. Before he became Kamen Rider Black, he was a walking grasshopper-like creature for a few seconds before the full transformation was completed. Nobuhiko could be seen in this grasshopper form too after he was kept in Gorgom's transparent crystal ball, waiting to transform into Shadow Moon.
A Kamen Rider would somehow not be complete without his Henshin pose.
Above pictures are Minami Kotaro's henshin sequence. His transformation word was "Henshin."
As a reconstructed human, just like any other Kamen Riders, Kotaro possessed special abilities.
The following were his abilities seen in the series.
Withstand high voltage electricity
In episode 1, High Priest Darom proved to Kotaro that he was no longer a normal human by electrocuting him. Kotaro was thrown onto several neon lights on a building, in which he was electrocuted and later still survived.
Again in episode 1, Kotaro accidentally broke a glass bottle of drink (which Kyoko threw to him) by simply catching it. Kyoko, Katsumi, and even Kotaro himself were shocked that he could break it.
Seen in episode 12, Kotaro could hear the sound of a motorbike's engine which was far in the mountains. He went to investigate and saw Daimon Akira (the person who would introduce the Road Sector) training his son.
In episode 35, Kotaro was severely injured after he lost to Birugenia in a battle while trying to rescue Kyoko. Both Kotaro and Kyoko hid in a cave where she attended to his wounds. She was suprised that the injuries were gone in a short amount of time.
Another advantage of being a reconstructed human as seen in episode 43. Kotaro could adjust his sight to see invisible lasers which Gorgom installed to detect intruders.
In episode 41, Gorgom was manipulating time by having a gadget which could send people back to the past or even turn them back into kids. At one point, time was stopped, everyone and everything was paused in time but Kotaro was the only person moving during this time.
Kamen Rider Black had 2 motorcycles.
The first trusty motorcycle was Battle Hopper.
It originated from Gorgom and was supposed to be used by the next Century King.
Apart from being a machine, Battle Hopper was also a living organism. It had the ability to repair itself when severely damaged. Seen in episode 7 and the first movie. It talked for the first time in the finale just before it died after being destroyed by Shadow Moon.
Battle Hopper's trademark attack. Its used when the motorcycle gave an extra special hit through a monster or other kinds of obstacles. The term "Dynamic Smash" was not mentioned in the series, though.
Kamen Rider Black's second motorcycle was called Road Sector.
Road Sector was first introduced in episode 12.
Like Battle Hopper, Road Sector was also supposed to be used by Gorgom. However, it was hidden by Daimon Akira somewhere in the woods. Daimon met and got to know that Kotaro was Kamen Rider Black and was not reluctant to surrender the motorbike to our hero. Road Sector would come to the aid of Kamen Rider Black when it was called.
Road Sector's in-built computer.
Able to receive SOS messages and play a video.
A strong force of smoke from its exhaust pipe. Used to momentarily fend off his opponents while he tend to other stuffs.
Used to shield Kamen Rider Black when he wanted to smash through walls and other obstacles.
Road Sector's trademark attack and could only be performed after the Attack Shield had been raised. The motorcycle would be covered in a bright light before it smashed through harder objects.
Seen in episode 19. When Kamen Rider Black was overpowered by Birugenia, he summoned for both of his motorcycles using the "Machine Scramble" call.
Rider Punch & Rider Kick
The primary killer moves in the entire series were the Rider Punch and Rider Kick. The above moves were used in episodes 1 to 13. After executing either one or both moves, Gorgom's monsters would be engulfed in flames before finally destroyed.
Kamen Rider Black discovered his weakness when he was fighting a Crab monster in episode 13. His Rider Punch had no effect on the monster due to its strong shell. To increase his capabilities, he trained himself to find a new killer move to destroy the monster. While training, he discovered a new Rider Punch which was more effective and more deadly.
(New) Rider Punch & Rider Kick
The new Rider Punch and Rider Kick were used from episode 13 until the very last episode. These new versions gave out stronger force of light and were more blinding. The difference between the new and the old moves were that the new ones required Kamen Rider Black to touch his knees before hitting his enemies.
The Rider Chop was first used in episode 4, usually used to just chop off monsters' body parts like horns etc. This move was very rarely executed and did not have enough power to destroy a monster.
His eyes would glow and the functions were to see monsters' movements in the dark and to detect their weaknesses.
The triangular structures on both sides of his head would glow purple and the function was to hear voices and sounds from far away. It was used in episodes 11, 22 and 33.
Kamen Rider Black's antennas would move to detect monsters which were moving too fast to be seen. It was used in episodes 18 and 19.
His Yellow-Red-Yellow bands on his neck and wrists would glow to repel any monsters' sticky fluids or goo on his body. It was used in episodes 14 and 22.
A move only seen in episode 16. The Dragon Shoot was taught by the Interpol Agent, Taki Ryusuke. Ryusuke threw the Ultra Quartz (a wanted object in the episode) towards Kamen Rider Black where he quickly jumped and kicked it with one foot.
An awesomely-executed move seen in Kamen Rider Decade's episode 27.
Kamen Rider Black RX teamed up with Kamen Rider Black (Diend's summon) and perform this move called the Double Kick onto Apollo Geist.
Seen in "Kamen Rider Decade The Movie: All Rider vs Daishocker."
Triple Kick, executed by V3, Super-1 and Black, was aimed to defeat Decade in the Rider Battle. However, it did not get to hit Decade after he countered using his "Final Attack Ride" and "Attack Ride Illusion" combo.
Perharps the most powerful technique. By shouting out "Kingstone Flash", Kamen Rider Black could fire a burst of energy from his belt. It worked evertime to fend off the villains; whether its the High Priests or even the powerful Shadow Moon.
source: wiki, basrisi, youtube, google