Kohtaro Minami

Kohtaro Minami (南 光太郎), alternatively spelt Kotaro Minami, is the main protagonist of both Kamen Rider Black and Kamen Rider Black RX. Starting with Kamen Rider Decade and continuing onto most of the later crossover movies, there are two Kohtaro Minamis who are independently Black and RX.

Kamen Rider Black
Kohtaro was born on the day of a solar eclipse, along with his stepbrother Nobuhiko Akizuki, within the same hospital. Gorgom noticed this, and both brothers were entitled heirs to their leader, the Creation King's throne. After Kohtaro's parents both died (when Kohtaro was around 3 years old) as a result of an apparent accident, Prof. Akizuki then adopted Kohtaro alongside Nobuhiko as if they were brothers. On the night of their 19th birthday, they were captured by Gorgom and were remade into cyborgs and infused with King Stones. Kohtaro received the "Stone of the Sun" to become Century King Black Sun (世紀王ブラックサン). However before the final brainwashing Soichiro Akizuki interrupted the final stage of the process with Kohtaro barely escaping.

Having been pursued by Gorgom after his escape, Kohtaro discovers his newfound ability to turn into the a grasshopper humanoid as a result of their surgery, along with his newfound super strength and cyborg abilities.

After receiving a letter from Soichiro, Kohtaro secretly meets with his foster father and learns the truth about his childhood. Soichiro reveals to Kohtaro that he agreed to join Gorgom in order to receive funding for his archaeological research in exchange for Kohtaro and Nobuhiko to be operated on during their 19th birthdays. When Kohtaro's father had refused to join the organization, Gorgom had him and Kohtaro's mother assassinated. After Prof. Akizuki is killed by five of Gorgom's Spider Mutants, Kohtaro transforms once again and takes the title of "Kamen Rider Black." He then vows vengeance against Gorgom and seeks to rescue Nobuhiko from their clutches. As Black, Kohtaro gains support from Nobuhiko's younger sister, Kyoko, as well as Nobuhiko's girlfriend Katsumi. He would often be found working part-time with the two girls at the Capitola café. He would also gain allies in fight against Gorgom, such as Interpol officer Ryusuke Taki and Gorgom's own Whale Mutant.

Eventually Kohtaro reunites with Nobuhiko; however, Nobuhiko was converted into the perfected Century King, Shadow Moon. In their fight, just when Kohtaro was winning the fight, the Creation King temporarily turned Nobuhiko back into human form again. This caused Kohtaro to lose the fight as Nobuhiko turned back into Shadow Moon and launched a surprise attack. He then tried to convince Shadow Moon that Earth belongs to all living things and was landed a finishing blow. As he turned back into human form thus causing Shadow Moon to hesitate and decide against taking Kohtaro's King Stone, Kohtaro was killed and his family had to evacuate from Gorgom's reign over Japan. Eventually Black was resurrected and fought his way through hordes of monsters until fighting Shadow Moon and unwillingly defeating him. Kohtaro was then mercilessly taunted by Shadow Moon who told him that he shall feel regret for the rest of his life knowing that he killed his best friend and step-brother Nobuhiko. Despite these cruel words, Kohtaro told Shadow Moon to stay alive so they can later escape together.

Using the Satan Sabre used by Shadow Moon, Black then fought against the Creation King of Gorgom and destroyed him. The base soon started to self destruct which prevented him from getting Shadow Moon out to safety. Kohtaro then looked at the ruins while saying Nobuhiko's name. With the Gorgom defeated, Kohtaro visited the Capitola bar before leaving for unknown parts.

RX
"I am the child of the sun! Kamen Rider Black! RX!"

- announcing his transformation to Black RX

After the defeat of Gorgom, Kohtaro is left homeless until he is taken in by the Sahara family. He became a helicopter pilot for the family's business due to their connections, beginning a new life for himself. Unfortunately, Kohtaro is later abducted into the Crisis Empire's mother-ship. The Crisis Empire was aware of his identity as Black and gave him an offer to join them. Kohtaro refused and fought back but was incapacitated when his King Stone was damaged and his transformation ability eliminated. He was ejected into space to float aimlessly until the sun's radiation altered his King Stone. When his pod entered Earth's atmosphere, Kohtaro miraculously survives and immediately discovers he had gained a new power in the shape of an evolved rider form. With his new power, Kohtaro engaged the Crisis Empire forces as Kamen Rider Black RX.

Kohtaro's campaign was long and grueling. In one instance, the family's daughter Hitomi is kidnapped by Maribaron in a plot to make her the Crisis Empire's only living heir. Kohtaro attempts to rescue her using Deathgaron, only to land in the Demon World's Desert of Death. He then ends up in a trap set up by Maribaron. Deathgaron kills Hitomi, but in his grief and sorrow, RX invokes a new Rider power, RoboRider. Using his power, RoboRider fatally wounds Deathgaron before learning that the Hitomi killed was a fake and the real one was being taken to the Valley of Miracles. 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 Princess Karuoriya. It was after they break free that Kohtaro 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, Kohtaro is forced to surrender when the Triplon captured Shigeru and Joe. Kohtaro 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, Kohtaro succeeded in having Hitomi regain his memory as she and the others are returned to their original ages by the people who originally resided in the valley. With only Joe and the Sahara Children knowing his identity, Kohtaro 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 thrust the Revolcane through Shadow Moon's King Stone, seemingly effectively turning him good shortly before he died after saving two kids. With a sorrowful look of sadness as he saw Nobuhiko's corpse, Kohtaro remembered Shadow Moon's actions and decided that in the end, Shadow Moon truly turned back into Nobuhiko as he swore in his heart that he would defeat the Crisis Empire and bucked up his determination. He then carried the now human form Nobuhiko's body to presumably bury him. In the finale, he was helped by the 10 veteran Kamen Riders to destroy the Crisis Empire.

Kamen Rider: Run All Over the World
In the film, the Crisis Empire devise a plan to defeat Kohtaro Minami by reverting him back to his old form of Kamen Rider Black and sending out several revived monsters after him. However, Kamen Rider Black is assisted by another RX, who used a time warp to help his past self. The two are joined by RX's alternate forms of Robo Rider and Bio Rider, and the four Kamen Riders combine their powers to defeat the revived monsters.

Kamen Rider Decade
In Kamen Rider Decade, a two episode arc features two different Kohtaro 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, looking identical to the Kohtaro Minami from the World of Black RX; Black never appears in his civilian form in the film. Official material related to the movie, like the pamphlet distributed alongside its theatrical showing, make it clear that Black RX is the original character, but Black is another Kohtaro Minami who never became Black RX.

In the manga adaptation of All Riders vs. Dai-Shocker, based on the original script when the movie was planned to be the original ending of the TV series, Black, with V3 and Super-1 fight Decade, Diend and Kuuga in the final round of the Rider Battle as in the movie. When defeated Black, V3, and Super-1 expresses sadness that he "erased the Riders and can't meet them any more."

Later, also like in the movie, All Riders return to fight Dai-Shocker. Bishum/Sayo Kadoya zaps Yuusuke into Kamen Rider Kuuga Rising Ultimate and he fights Decade. Shadow Moon knows who Black RX is. The other Riders stand back and BLACK says Decade needs to fight this one alone. After Tsukasa gets through to Sayo, Black RX comes to save her from Nobuhiko Tsukikage/Shadow Moon and it is he who destroys the Stone of the Earth.

After this appearance, all following crossovers which featured All Riders would go on to feature Black and Black RX as separate independent characters, even while both continue to be the original Kohtaro Minami, with the difference that one seemingly didn't go through the events of Black RX, without giving any specific explanation regarding it, not even in official extra materials.

Let's Go Kamen Riders
A mishap caused by the Greeed Ankh unintentionally altered the timeline which enabled Shocker to utilize a Cell 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 and most other riders got on their motorcycles and performed the "All Rider Break", while RX hopped into his Ridron, together all Riders rammed into the Rock Great Leader and defeating it once and for all with the All Rider Break.

Super Hero Taisen


"Stop this, Nobuhiko!" "Don't interfere, Black Sun!"

- Kamen Rider Black and Shadow Moon face off once more.

Kamen Rider Black appeared in a flashback where he was part of the group of Riders defeated by Gokai Red along with Hibiki, G3-X, Knight, Zolda, and Gatack. Both Black and RX, as separate heroes, 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. During the battle, Black RX is shown defeating a Gormin. Afterwards, a separate Kamen Rider Black joined forces with the, as they protected Earth in the same year, and launched an attack against the revived Shadow Moon and General Jark.

Super Hero Taisen Z
Black RX was part of a force of Rider and Sentai reinforcements led by Kamen Rider 1 and that came to assist the Riders and Sentai of recent years who were overwhelmed by the revived monster army of the. The combined forces of superheroes were able to turn the tide against the Madou army. They lined up and used their various finisher attacks to destroy the revived monsters.

After was destroyed and the battle was finally over, RX appeared standing on a cliff with all the other heroes who appeared to help, to say goodbye to the heroes of recent years before taking their leave.

Kamen Rider Taisen
"Because the ones who brought Badan to the surface were the Heisei Riders." "We have no choice but to eliminate the detestable Heisei Riders along with Badan!"

- Black and RX explain to Tsukasa why he and the other Heisei Riders have to be defeated. Black and Black RX appear as separate Riders again. They first appear telling the Heisei Riders to stay out of the current Badan crisis, attacking Tsukasa and Shotaro to take a young boy Shu Aoi with them when they refuse. Tsukasa escaped with Shu, while Joker faced off both Blacks until Baron arrived to aid Joker. They defeated Black RX with a Punish Mash/Rider Kick combo, though Black manages to escape with the help of Amazon and Super-1. The two Showa Riders beat Baron while he protects Joker from a Rider Kick/Great Slice combo.

In another clash between Heisei and Showa sides, Black aids the first six Showa Kamen Riders. Black points that the wish of the Heisei Riders to bring back their fallen comrades is what allowed Badan to attack. However, the Heisei Riders don't back down and Black faces Kamen Rider Joker, with the two Riders taking each other out with their Rider Kicks. Gaim is soon left as the last Rider standing before Ambassador Darkness of the Badan Empire reveals himself to be Ryo Murasame (Kamen Rider ZX). Together, they execute the Showa Riders' plan to restore and bring together the other Riders.

Black RX takes on various Combatroids alongside Schwarian, while Black faces more Combatroids and Baraom. Midway through the battle, they're attacked by the Generalissimo of Badan when he emerges, although from the  soon takes the battle. After Shu is rescued by Decade, both Black and RX are among the Riders that attack Badan City directly to destroy the Mega Reverse Machine and Badan's headquarters. After the battle is over, both combine their powers for a Rider Syndrome technique, allowing Shu to meet his mother one last time.

However, there was still one final clash between the Heisei Riders and Showa Riders in order for the Heisei Riders to be acknowledged by the Showa Riders. Black initially faces Hibiki while Black RX faces Blade, when the battle gets to the beach, Black faces Double while Black RX faces Ryuki in a sword battle. Shortly afterwards, Black RX faces Double, while Black faces OOO. After the end of the battle between Gaim and Rider 1, all other Riders stop their own battles and agree to protect the world together.

"We protect the dreams of children, and continue to rain hope for everyone. That’s what it means to be a Kamen Rider!"

- Kohtaro Minami reveals the meaning of being a Rider He and his senior Riders, Takeshi Hongo and Shiro Kazami are one of the three main Showa Riders in this movie. He remains BLACK after Shocker alters the timeline into making Kamen Rider 3 exist.

Affected by the timeline being changed from Rider 3 defeating the Double Riders, Kohtaro never evolved from Black to Black RX and remains as Black even into middle adulthood. Althought he fights against Shocker Rider Drive, he is able to help restore Shinnosuke's memory, but later sacrifices his life to allow him and Kiriko to escape the Drive Pit. Kohtaro is revived a while afterwards and evolved from Black to Black RX. During the Rider Grand Prix, he defends Drive from Mashin Chaser while on the Ridoron. In final battle, he joins Shinnosuke and his friends accompanied with most of good Riders to start their final battle against Shocker and their Great Leader with help of a Super Sentai Team.

Chou Super Hero Taisen
The Chou Super Hero Taisen Game World copy of Kamen Rider Black was the red representative and leader of Team Jiro in the tournament for the power of the Kamen Sentai Gorider. They faced Team Takaiwa in their first match, but it's not known who won. Either way, the winner of the match was defeated by Team Genm immediately afterwards.

Personality
Kohtaro is an emotional man which has served both good and bad for him. After seemingly losing his step-brother when he became Shadow Moon, Kohtaro tried very hard to get Nobuhiko back while being saddened at having to fight him. He also didn't truly give up on Nobuhiko and tried to save him even as Shadow Moon. Towards the end of his first series, Kohtaro had to part with not only Battle Hopper who thanked him for everything, but also with Shadow Moon who he unwillingly defeated in combat serving as a maturity point for him. As saddened as he was for failing to save the both of them, Kohtaro chose to keep on living for himself showing strength for his character.

It was shown that Kohtaro is a trendy person who is into the latest stuff. As a running gag, Kohtaro has a rough side, and isn't too adept with plants. This goes even further in his second series, as Kohtaro once gave too much water to Reiko's cactus and tried to make it look like someone stole the cactus while secretly throwing it away. This shows a sneaky and shameless side to his personality.

After becoming Kamen Rider Black RX, Kohtaro reunited with his bike who was also revived into Acrobatter, whom he often talks with rather humorously. Also to be noted is that unlike the previous series, Kohtaro seemingly managed to help Nobuhiko regain his former self as he died after saving some kids. The death of Nobuhiko seemed to have strengthened his will as he swore in his heart that he would defeat the Crisis Empire which he eventually did. Interestingly, Kohtaro seems to have become more humorous in RX.

Fighting skill
As Black, Kohtaro utilized his power through physical brawling while effectively using his King Stone Flash against his opponents. He was also able to pilot a helicopter as shown in RX. After becoming RX, he has relied more on his weapons and didn't use his King Stone Flash or physical moves as effectively as his previous series hinting a drop in physical skills. He does however, become adept at sword fighting and shooting with precise marksmanship. In his later battles, Kohtaro seems to have regained his physical skills through training with his seniors.

Kamen Rider SD (OVA)
Black RX is the newest Kamen Rider and star of the animated short Kamen Rider SD: Strange!? Kumo Otoko. Black RX is still new to being a Kamen Rider and often leaps before he looks. In the movie, he has fallen in love with an instructor at a local sports club, which GranShocker kidnaps in a plan to destroy the Kamen Riders once and for all. He has been paired up in a team with Kamen Rider 1 and Kamen Rider ZX, the latter of which has taken a liking to teasing the young Rider. His finishing move is slashing his enemies with his Revolcane sword. He rides in a modified version of the Acrobatter motorcycle.

Unlike later crossovers which feature Black and Black RX side by side, only RX appears in this OVA.

Kamen Rider Black: Taiketsu Shadow Moon
Kamen Rider Black fights through various Gorgom opponents both on foot and while riding Battle Hopper in the video game Kamen Rider Black: Taiketsu Shadow Moon.

Super Tokusatsu Taisen 2001
Kohtaro Minami/Black/Black RX is a playable character in the Sony PlayStation crossover strategy game Super Tokusatsu Taisen 2001 along with Takeshi Hongo, Hayato Ichimonji, Shiro Kazami, and Joji Yuki.

Kamen Rider: The Bike Race
Black RX appears riding the Acro Batter (Kamen Rider Black is absent) in Kamen Rider: The Bike Race, a racing game featuring the majority of Kamen Riders and Rider Machines up to Kamen Rider Agito.

Kamen Rider: Seigi no Keifu
Kamen Rider Black is soon attacked by Sasoritokages in the "Cable Room". After defeating him, he goes to the "Gas Chamber" and is greeted by General Black. He then sends Isoginjaguar to test Black's power. After Isoginjaguar is defeated, General Black tries to kill Kamen Rider Black by closing the "Gas Chamber", but it fails. Kamen Rider Black then enters the "Command Center" and soon encounters Utsubogamess, but the monster is no match. He comes face to face with General Black who reveals that the Big Gas Machine was created to evolve deceased monsters. He transforms into Hell Chameleon to face Black. With some effort, Kamen Rider Black defeats the General and escapes.

Kamen Rider Battle: Ganbaride
"To be added"

All Kamen Rider: Rider Generation 1 & 2
Kohtaro, as both Black and RX is the unlockable characters on both games. His RoboRider and BioRider forms are used for super move. In the second series, RoboRider can use another technique by increasing the attack power of his Vortech Shooter, while BioRider can use another technique by slashing enemies with his Bioblade.

Climax series
"To be added"

Kamen Rider: Battride War Genesis
Both Black and Black RX are among the Showa Riders who make their Battride War debut in this game. Like both versions of IXA, Nago (the playable/2000s version of IXA) and Otoya (tag partner only/1986 IXA), both versions of Black can be paired if using tag partner mode.

As Black, this form is a charge and trapping character, such as having a Vital Charge refill by holding R1 to use Vital Charge via holding square to gain an access of a powerful version of his special attacks once the power is fully charge, such as from Kingstone Flash to Rider Kick automatically, or as a counter when using Kingstone Flash during guard from enemies' attacks. Vital Charge charges can be perform during an attacks. His only super finisher is from Rider Punch to Rider Kick, which access to Vital Charge state. However, when entering the transportation mode riding his Batta Hopper, even while in "final form" state including when wait too long without riding his bike in that state, Vital Charge state is still limited like in normal state, but can be refill via charging on his Rider Chop and Punch special moves, as using Hold R1/D-Pad Up button will only exit his "final form" state and cost amount of meters.

As Black RX, this form has a form change of becoming Robo Rider and Bio Rider. As his default current RX form, he has Sun Bask Resurrection Gauge, which can be accessed after its auto-regenration while in this form then dies at 0% reviving him in 50%. His "final form" is in his default RX form, but has a full access on using all Revolcane slash attacks, such as on his normals. However, unlike Ryuki, RX lacks vehicle changes while changing form, such as Robo Rider's Roboizer and Bio Rider's Mach Jabber, including Ridoron, which should a vehicle transportation for his "final form". Instead, as seen while as Robo Rider and Bio Rider when using a transportation ride, he will revert to back his default RX form.

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

Maskman Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the maskmen are seen fighting the, Kamen Rider Black, Metalder, , , & ,  & ,  &  arrive to assist the team.

Liveman Stage Show at 3 Heroes Korakuen Yuenchi
In a stage show where the Livemen are seen fighting their usual foes, the shows up and winds up defeating them. & Kamen Rider Black arrive to assist the team.

Liveman Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the Livemen are seen fighting the usual foes,, , the Underground Empire Tube, the Armored Army & The Sorcerers Clan show up and wind up defeating them. Kamen Riders Black & RX, Jiraiya,, & , Metalder, Red &  & Change Dragon arrive to assist the Liveman.

Turboranger Stage Show at 3 Heroes Korakuen Yuenchi
In a stage show where the Turborangers are seen fighting the, Kamen Rider Black RX & arrive to assist the team.

Turboranger Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the Turborangers are seen fighting the Hundred Boma Tribes, Kamen Riders Black & RX, Jiban, Jiraiya,, , Red & Pink Mask, & Change Dragon arrive to assist the Team.

Fivemen Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the are seen fighting the, , Kamen Rider Black RX,  & , Red Falcon,  & Red Mask arrive to assist the team.

Jetman Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the are seen fighting, , , Kamen Rider Black RX,  & , Red & Pink Turbo, Yellow Lion & Red Mask arrive to assist the team.

Dairanger Stage Show at Super Hero Korakuen Yuenchi
In a stage show where the core are seen fighting their usual foes,,  &  show up and wind up defeating them, so , Kamen Rider Black, ,  & ,  &  arrive to assist the Dairangers.

Rider Forms
After being transformed into a cyborg and having the King Stone called the "Stone of the Sun" implanted into him, Kohtaro became Kamen Rider Black who used the power of the King Stone to transform and charge his attacks.

After being ejected into space by the Crisis Empire, Kohtaro's King Stone evolved giving him the power to use the more powerful and versatile Black RX form.

Portrayal and Casting
Kohtaro Minami is played by Tetsuo Kurata (倉田 てつを). Kurata auditioned for the role of Kohtaro 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 Kohtaro 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 Kohtaro Minami/Kamen Rider Black in Kamen Rider: Seigi No Keifu. In 2009, Kurata returned as Kohtaro 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, ''RX! Dai-Shocker Attack, then joining forces with the A.R. Black in the next, Black × Black RX''. That same year, he had a cameo as the original Kohtaro 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 , Jiro Okamoto again acted as suit actor for RX, while Hirofumi Tanaka (田中 大文) provided the voice for Kamen Rider Black.

In Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai, both Black and Black RX were voiced by Hiroshi Kamiya (神谷 浩史) and Kenichi Suzumura (鈴村 健一) respectively.

Rider No.
As the leading Rider protagonist of Kamen Rider Black and Kamen Rider Black RX, Kohtaro Minami is labeled Kamen Rider #11 (仮面ライダー11号) and Showa Rider #11 (昭和ライダー11号) as Kamen Rider Black & Kamen Rider #12 (仮面ライダー12号) and Showa Rider #12 (昭和ライダー12号) as Kamen Rider Black RX.

Two Kohtaro Minamis

 * There have been several 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 time warp causes Kohtaro to meet his past self. He also meets himself in his other forms, Robo Rider and Bio Rider, who also arrived due to the time warp.
 * The second was in the two episode arc (RX! Dai-Shocker Attack/Black × Black RX) of Kamen Rider Decade, in which the World of Black and the World of Black RX were treated as separate universes.
 * The third was in Kamen Rider Decade: All Riders vs. Dai-Shocker. All returning Riders in this movie were stated to be the originals by the producers and assorted official material, like official site bios, but two Kohtaro Minamis still coexisted, both portrayed by Tetsuo Kurata, similarly to the Decade TV show appearance, meaning one or both of them could have been the Kohtaro Minamis from either the World of Black or World of Black RX.
 * The fourth was in OOO, Den-O, All Riders: Let's Go Kamen Riders, where there wasn't a proper explanation for their combined appearance. However it can be assumed that they are both Kohtaro from different points in time similar to the aforementioned Run All Over the World.
 * The fifth was Super Hero Taisen, which yet again features both side by side, but only in the final battle, without any specific explanation for their combined appearance. The movie pamphlet distributed alongside theatrical showings of the movie references how Black's destined battle against Shadow Moon continues even 25 years later. However, since Kamen Rider Decade is involved, it can be assumed that the Kamen Rider Black in the movie is the one from the World of Black, where Kohtaro never lost his powers.
 * The sixth instance was in Kamen Rider Taisen when both of them appear to battle Kamen Rider Joker. Once again, no explanation is given. But, considering Decade's involvement in the film it is likely that one or both of them are A.R. World Riders.
 * The seventh is in the 8ing's Kamen Rider video game series since Climax Heroes series, while pairing both Black and Black RX in the team slots, presumably that both Blacks are from different timelines.
 * A special case occurs in , where both Black and Black RX appear, but at separate points in the film, and that they are both the original Kohtaro Minami.

Dub names

 * Kohtaro is renamed as Robert Akizuki in the Filipino dub and as Isamu Minami in Brazil.