Kohtaro Minami


 * For the A.R. World versions, see Kotaro Minami (A.R. World) and Kotaro Minami (A.R. World 2).

Kotaro Minami is the main character of Kamen Rider BLACK and Kamen Rider BLACK RX. He has appeared as the title character in both series. In Kamen Rider Decade there are two Kotaro Minamis that are independently BLACK and RX.

Black
Kotaro was born on the day of a solar eclipse along with his stepbrother Nobuhiko Akizuki. The Gorgom noticed this, both brothers were heirs to their leader's throne. Once the two were of age, they were captured by the Gorgom and were infused with Kingstones, Kotaro was infused with the Stone of the Sun to become Century King Black Sun. However before the final brainwashing, Kotaro's legal guardian and Nobuhiko's father, Soichiro Akizuki interrupted the final stage with Kotaro barely escaping.

Soichiro reveals to Kotaro that his real parents were killed by the Gorgom when he was a baby, before he himself was killed by five of Gorgom's Spider Mutants. Kotaro transformed and after defeating the mutants took the identity Kamen Rider BLACK to fight Gorgom. As BLACK, Kotaro gains friends from Nobuhiko's family as well as a friendly Gorgom mutant. Eventually Kotaro reunites with Nobuhiko; however, Nobuhiko was converted into the perfected Century King, Shadow Moon. In their fight, BLACK was killed and his family had to evacuate from Gorgom's reign over Japan. Eventually BLACK was resurrected and fought his way through hoards of monsters until fighting Shadow Moon and presumably killing him. Using the Satan Sabre used by Shadow Moon, BLACK fought against the Creation King of Gorgom and destroys him. With the Gorgom defeated, Kotaro visits the Capitola bar before leaving for unknown parts.

Maskman Stage Show at 3 Heroes Korakuen Yuenchi
In a stage show where the Maskman are seen fighting usual foes, Armored Army, and Gorgom show up and wind up defeating them. Kamen Rider Black & Metalder arrive assist the Maskman

Maskman Stage Show at Super Hero Korakuen Yuenchi
In a stage show where maskman are seen fighting Undergorund Empire Tube, Kamen Rider Black, Metalder, Speilban, Shaider, Red Flash, Blue Flash, Change Dragon, Change Phoenix, Green Two, & Dyna Black arrive assist the Maskman

Liveman Stage Show at 3 Heroes Korakuen Yuenchi
In a stage show where the Livemans are seen fighting their usual foes, the sorcerers clan show up and wind up defeating them. Jiraya & Kamen Rider Black arrive assist the Livemans

RX
Half a year after the defeat of Gorgom, Kotaro is left homeless until he is adopted into the Sahara family. He became a helicopter pilot for his new family's business due to their connections, beginning a new life for himself. Unfortunately, five years later Kotaro was abducted into the Crisis Empire mothership. The empire was aware of his identity as BLACK and gave him an offer to join them. Kotaro refused and fought back but was incapacitated with the Kingstone damaged. He was ejected into space floating aimlessly until the sun's radiation altered his Kingstone. When his pod entered Earth's atmosphere, Kotaro miraculously survived and had gained new power. His rider form evolved into Kamen Rider BLACK RX. With his new form and power he fought against the Crisis Empire.

When his adoptive sister Hitomi is kidnapped by Maribaron to assume the identity of the Crisis Empire's only living heir, Kotaro uses Deathgaron to enter the Desert of Death after them. By the time he finds Hitomi, Kotaro falls into a trap set up by Maribaron to do away with him and Deathgaron. When it looked as if Death Gron had actually killed Hitomi, RX was in a state of sorrow and sadness over the death of Hitomi invokes a new power, RoboRider. Using his power, RoboRider fatally wounds Deathgaron before learning that the Hitomi killed was a fake and the real one is being taken to the Miraculous Valley. On his way, he meets Joe the Haze who is under the control of Nexticker, freeing him before they and Shigeru are captured by Maribaron and the Princess Karuoriya. It was after they break free that Kotaro realizes the princess is Hitomi, who was abducted to replace the real princess who died and was force grown by the nearby waterfall. When he attempts to restore Hitomi's memory, Kotaro is forced to surrender when the Triplon captured Shigeru and Joe. Kotaro was then placed into a room for a hole designed to counter his abilities as both RX and RoboRider for a slow painful death. His rage to save those he love invokes another new form, Bio Rider. After killing Triplon, with Shigeru's help, Kotaros in having Hitomi regain his memory as she and the others are return to their original ages by the people who originally resided in the valley. With only Joe and Shigeru knowing his identity, Kotaro returns to Earth.

During the middle of the series, Shadow Moon mysteriously returns to seek revenge against him, shortly after, Shadow Moon was finally defeated when RX thrusted the Revolcane through Shadow Moon's Kingstone, effectively turning him good shortly before he died and finally reverting to Nobuhiko. In the finale, he was helped by the 10 veteran Kamen Riders to destroy the Crisis Empire.

Liveman Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the Livemans are seen fighting the usual foes, Great Star League Gozma, Reconstructive Experiment Empire Mess, Underground Empire Tube, Armored Army, & The Sorcerers Clan show up and wind up defeating them. Kamen Rider Black, Kamen Rider Black RX, Jiraya, Princess Ninja Emiha, Red Mask, Pink Mask, Metalder, Red Flash, Yellow Flash, & Change Dragon arrive assist the Livemans

Turboranger Stage Show at 3 Heroes Korakuen Yuenchi
In a stage show where the Turborangers are seen fighting Hundred Boma Tribes, Kamen Rider Black RX & Jiban arrive assist the Turborangers

Turboranger Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the Turborangers are seen fighting Hundred Boma Tribes, Kamen Rider Black, Kamen Rider Black RX, Jiban, Jiraya, Red Falcon, Yellow Lion, Red Mask, Pink Mask, Green Flash & Change Dragon assist the Turborangers

Fivemen Stage Show at Korakuen Yuenchi
In a stage show where the Fivemen are seen fighting Silver Imperial Army Zone, Fire, Bycle, Walter, Kamen Rider Black RX, Red Turbo, Pink Turbo, Red Falcon, Blue Dolphin, & Red Mask arrive assist the Fivemen

Jetman Stage Show at Korakuen Yuenchi
In a stage show where the Jetmasn are seen fighting Dimensional War Party Vyram, SolBraver, Knight Fire, Kamen Rider Black RX, Five Red, Five Blue, Red Turbo, Pink Turbo, Yellow Lion, & Red Mask arrive assist the Jetmans

Dairanger Stage Show at Korakuen Yuenchi
In a stage show where the Dairangers are seeing fighting the usual foes, The Gorma Tribe, The Bandora Gang, Dimensional War Party Vyram, & Takewaki Kanzern show up and wind up defeating them. Janperson, Kamen Rider Black RX, Kiba Ranger, Tryanno Ranger, Dragon Ranger, Red Hawk & Black Condor arrive assist the Dairangers

Kamen Rider Decade
In Kamen Rider Decade, a two episode arc features two different Kotaro Minamis- one from a world where he is Black RX, and one where he remains Black. The two even encounter each other. In Kamen Rider Decade: All Riders vs. Dai-Shocker, Black and Black RX appear together again, both portrayed by Tetsuo Kurata. After the battle, RX is one of the few past Riders shown to demorph into his human form; Black never appears in his civilian form in the film. Interestingly, the Riders in the final battle of All Riders vs. Dai-Shocker are considered to be the originals and not the AR Riders Decade met in the Kamen Rider Decade series. In the case of Black and Black RX, which is the original Kotaro and where the other came from is not apparent from the film (though one would expect that the original Kotaro, who went from Black to Black RX in the original series, would not have returned to his less powerful Black form even if it were possible.) How it is that RX already knows Decade if he is not the Kotaro of the World of Black RX also remains unknown.

Let's Go Kamen Riders
A mishap caused by the Greeed Ankh unintentionally altered the timeline which enabled Shocker to utilize the Core Medal to create the Shocker Greeed which defeated the Double Riders and seemingly erased the legacy of the Kamen Riders from history. In 2011, after Kamen Rider New Den-O's attempt to repair the damage, he along with Kamen Rider OOO and M-Ankh awaited execution. However, it was revealed the Double Riders had their brainwashing removed by a Shocker scientist.

The Double Riders joined with New Den-O and OOO to fight Shocker's forces, but were eventually defeated. When the order was given to kill everyone, V3 suddenly appeared, asserting that there were more than four riders. V3 was soon followed by all the other revived riders that came after him, including Black and RX, as even though Rider history was changed, the people's memories haven't changed.

After the riders were united, they faced off against Shocker's Great Leader. Later, when joined by a force of extra riders, Black, RX, and all the other riders got on their motorcycles and performed the "All Rider Break", ramming into the Rock Great Leader and defeating it once and for all.

Super Hero Taisen
Both Black and RX were among the "All Rider" force during the "Super Hero Taisen" incident which resulted in the Kamen Riders and Super Sentai joining forces to defeat both Dai-Shocker and Dai-Zangyack. At one point, Black joined forces with the Hikari Sentai Maskman, as they protected Earth in the same year. They launched an attack against the revived Shadow Moon.

Rider Forms
After having the Stone of the Sun implanted into him, Kotaro became Kamen Rider Black who used the power of the Kingstone to transform and charge his attacks. After being ejected into space by the Crisis Empire, Kotaro's Kingstone evolved giving him the power to use the more powerful and versatile BLACK RX form.

Black
Kamen Ride Black (カメンライドBLACK) is the Kamen Ride Card which contains the power of Black. In All Riders vs. Dai-Shocker, Decade Complete Form Jumbo Formation performed the Final Dimension Kick, a variation of the Dimension Kick, transforming the Shōwa Riders, including Black, and Heisei Riders into Kamen Ride cards for Decade to travel through as opposed to Final Attack Ride cards before hitting the target.

In theory, this card would allow Kamen Rider Decade to transform into Black.

Black RX
Kamen Ride Black RX (カメンライドBLACK RX) is the Kamen Ride Card which contains the power of RX. In All Riders vs. Dai-Shocker, Decade Complete Form Jumbo Formation performed the Final Dimension Kick, a variation of the Dimension Kick, transforming the Shōwa Riders, including RX, and Heisei Riders into Kamen Ride cards for Decade to travel through as opposed to Final Attack Ride cards before hitting the target.

In theory, this card would allow Kamen Rider Decade to transform into RX.

Portrayal and Casting
Kotaro Minami is played by Tetsuo Kurata (倉田 てつを). Kurata auditioned for the role of Kotaro Minami in January 1987, when he had just graduated from high school. In a 2006 interview, Kurata had stated that, during the audition, he hadn't been able to portray the character appropriately, and did not think he would get the role. To his surprise, he was chosen by Shōtarō Ishinomori himself to play the lead role, beating some 8,000 other contestants. During this period, Kurata underwent intense training that included stage combat techniques, physical exercise sessions and acting and singing lessons.

On October 4, 1987, Kamen Rider Black premiered on TBS to public and critical acclaim. The success of the series, which ran for 51 episodes, generated enough interest from Toei Company executives to persuade them to produce a sequel, something unprecedented in the Kamen Rider Series franchise. After finishing his work on Black, Kurata was approached by Toei and renewed his contract for one more year in exchange for a salary raise to work on Black's sequel, Kamen Rider Black RX, this resulted in him becoming the only actor to be the star of two shows in the Kamen Rider Series. In a 1989 magazine interview, Kurata said he preferred Black over Black RX, quoting the comedy from the latter as "excessive". It is rumored that Kurata declined later invitations to reprise his role as Kotaro in fear of being typecasted, but such rumors were never confirmed.

As Kamen Rider Black, his suit actor was Jiro Okamoto (岡元 次郎) who also did work for RX along with Robo Rider and Bio Rider. Other suit actors were Tokio Iwata (岩田 時男), who did Robo Rider and Bio Rider, and Toshiyuki Kikuchi (菊地 寿幸) who did work for Robo Rider.

Tetsuo came back to voice Kotaro Minami/Kamen Rider Black in Kamen Rider: Seigi No Keifu. In 2009, Kurata returned as Kotaro Minami in Kamen Rider Decade where he played both his Black and Black RX incarnations at the same time. The alternate RX appeared first appeared in episode 26, Black × Black RX, then joining forces with the A.R. Black in the next, Black × Black RX. That same year, he had a cameo as the original Kotaro Minami, untransformed from Black RX, in the movie, Kamen Rider Decade: All Riders vs. Dai-Shocker. In All Riders vs. Dai-Shocker, Jun Watanabe (渡辺 淳) did suitwork for RX, Robo Rider, and Bio Rider while Jiro Okamoto also did work for RX and Black.

In OOO, Den-O, All Riders: Let's Go Kamen Riders, Kamen Rider Black was voiced by Ibuki (勇吹輝) while Jiro Okamoto acted as suit actor for RX.

In Kamen Rider × Super Sentai: Super Hero Taisen, Jiro Okamoto again acted as suit actor for RX, while Hirofumi Tanaka (田中 大文) provided the voice for Kamen Rider Black.

Trivia

 * There have been five instances where Kamen Rider Black and Kamen Rider Black RX have existed independently from each other.
 * The first was in Kamen Rider: Run All Over the World where a timewarp causes Kotaro to meet his past self.
 * The second was in the two episode arc of Kamen Rider Decade, in which the World of Black and the World of Black RX were treated as separate dimensions.
 * The third was in Kamen Rider Decade: All Riders vs. Dai-Shocker. All Riders in this movie were stated to be the originals by the producers, but two Kotaro Minamis still coexisted, both portrayed by Tetsuo Kurata. Which was from which dimension is unknown.
 * The fourth was in OOO, Den-O, All Riders: Let's Go Kamen Riders. The Riders in this case were summoned through time by Owner.
 * With the cast of Decade and Den-O playing a large role in Super Hero Taisen, time travel and parallel universes are equally possible for Black and Black RX's appearances in this film.
 * His ability to become entirely liquid in Bio Rider form was later referenced as a power of the future Rider Kamen Rider OOO, where, in his ShaUTa combo, he could use the same power.
 * Kotaro currently holds the record of the rider with most appearances.
 * Kotaro is renamed as Robert in the Filipino dub and as Isamu in Brazil.
 * Kotaro is currently the only rider to get a completly new set of powers at the cost of his old ones.