Kamen Rider writers : the early Showa era : Kamen Rider through Kamen Rider Stronger (or the "Tobei Tachibana era")

In 1971, Shotaro Ishinomori created the Kamen Rider franchise, which primary concept is that a man, Takeshi Hongo, is kidnapped by a secret evil organization, Shocker, and changed into a cyborg. However, he managed to escape, and since then, fights relentlessly against the Shocker under the guise of Kamen Rider, a grasshopper like hero, whose powers are the results of his modifications. Riding a bike, he never stops thwarting Shocker's evil plans? He's helped by a man who was his racing mentor, Tobei Tachibana. Soon, another Rider appeared, Hayato Ichimonji, who became Kamen Rider Nigo, and a FBI agent, Taki Kazuya. They fought Shocker until it was at last destroyed.

Kamen Rider lasted two years and 98 episodes, but its success was big enough to have immediately a follow up, Kamen Rider V3, where a man, Kazami Shiro has his family killed by a monster from the Destron army and himself is seriously wounded, but is saved by Kamen Rider 1 and 2, and turned by them into a cyborg, Kamen Rider V3, who decided to fight the evil Destron. Tachibana was still here to act as a mentor and ally, and has even formed the Boys's Kamen Rider squad with Shiro's fiancee, her younger brother and other kids. Late in V3, a new ally appeared, Joji Yuki, akaRiderman, who had been first involved with Destron before being betrayed by Marshal Armor,  and then joining V3 in his fight against Destron. The two first Riders also sometimes appeared in V3, keeping the continuity. Following Kamen Rider V3 went Kamen Rider X, and Kamen Rider Amazon, and at last Kamen Rider Stronger.

In all those shows, Tobei Tachibana was involved as the mentor of the Rider, and the last arc of Stronger brought back all the Rider together to fight the Delza army. which Great Leader was none other than the Great Leader of Shocker. As such, all series had a same continuity and Stronger's final arc was pretty much the final arc of those Rider shows.That's why, I've decided to explore the writers of all those Rider shows at once.

All those early Kamen Rider shows had a same head writer, Masaru Igami, who is none other than Toshiki Inoue's father. Interestingly, Inoue would be heavily involved in early Heisei Rider shows as head writer and secondary writer, while his father is the key writer of the early Showa Rider shows.
However, because Kamen Rider is mostly episodic, many secondary writers were involved as well.

Kamen Rider (98 episodes)

Masaru Igami (head writer) :  1-3, 6-7, 13-17, 26-27, 31, 35, 38-41, 52-54, 62, 64-68, 71, 74, 77-81, 87, 91-94, 97-98 (41 episodes)
Shinichi Ichikawa : 4 (with Masayuki Shimada) (1 episode)
Masayuki Shimada : 4 (with Ichikawa), 19, 23, 33, 36-37, 42, 46, 58-59, 63, 69, 82, 84 (with Shotarou Ishinomori), 85, 88, 95 (17 episodes)
Mari Takizawa  : 5, 8, 12, 18, 24-25, 28-30, 32, 34, 44, 55-57, 60, 86 (17 episodes)
Katsuhiko Taguchi : 9-10, 20-21 (4 episodes)
Takao Nagaishi: 11 (1 episode)
塚田正熙 : 22 (1 episode)
Seirou Suzuki : 43, 48, 72-73, 75 (5 episodes)
Takeo Oono : 45 (1 episode)
Fumio Ishimori : 47, 50, 76, 83, 89-90 (6 episodes)
Takayuki Hasegawa : 49, 51 (2 episodes)
Kimio Hirayama and Minoru Yamada: 61 (1 episode)
Gorou Okeya : 70 (1 episode)
Shoutarou Ishinomori  (creator of Kamen Rider) : 84  (with 島田真之) (1 episode)
Fumio Maruyama : 96 ( 1 episode)

Kamen Rider V3 (52 episodes)

Masaru Igami (head writer) : 1-4, 13-15, 20-21, 25-32, 35-36, 43-44, 47 (22 episodes)
Seirou Suzuki : 5-6, 11-12, 16, 23, 33-34, 38, 45-46, 51-52 (13 episodes)
Masayuki Shimada : 7-8, 17-18, 22 (with 塚田正煕) (5 episodes)
Makoto Naito and Toshimichi Saeki : 9-10 (2 episodes)
Mari Takizawa : 19, 24, 37 (3 episodes)
塚田正熙 : 22 (with 島田真之) (1 episode)
海堂肇 : 39-42, 48 (5 episodes)
Takao Nagaishi : 49 (1 episode)
Kimio Hirayama : 50 (1 episode)

Kamen Rider X (35 episodes)
Masaru Igami (head writer) : 3-4, 9-10, 13-16, 21-24, 32, 35 (14 episodes)
Shuukei Nagasaka :1-2, 7-8 (4 episodes)
Seirou Suzuki : 5-6, 11-12, 18-19, 25-26, 29-30, 34 (11 episodes)
村山庄三 : 17, 28, 31, 33 (4 episodes)
Masayuki Shimada : 20 (1 episode)
Kimio Hirayama and 中瀬当一 : 27 (1 episode)

Kamen Rider Amazon (24 episodes)
Masaru Igami (head writer) : 7, 9, 12-15, 20, 22 ( 8 episodes)
大門勲 : 1-4 ( 4 episodes)
Seirou Suzuki : 5-6, 10-11, 16, 18-19, 23-24 (9 episodes)
村山庄三 : 8, 21 (2 episodes)
Seiji Matsuoka : 17 (1 episode)

Kamen Rider Stronger (39 episodes)
Masaru Igami (head writer) : 1-2, 7, 10-13, 17-20, 31-32, 37-39 (16 episodes)
Seirou Suzuki : 3, 9, 15, 22-28, 30, 34-35 (13 episodes)
Seiji Matsuoka : 4-5, 16 (3 episodes)
村山庄三 : 6, 21, 29, 33 ( 4 episodes)
阿井文瓶 : 8 (1 episode)
海堂肇 : 14 (1 episode)
Takeo Oono : 36 (1 episode)


A few comments : it can be noticed that while Masaru Igami is the main writer of all series, he always writes less than half of the episodes of each season, leaving plenty of secondary writers involved. Among those secondary writers, there is at least one who writes a big bunch of episodes (two in the case of Kamen Rider) even comparable with the number Igami writes. In Kamen Rider, those writers were Masayuki Shimada and Mari Takizawa, who wrote each 17 episodes of Kamen Rider : those two would be less involved in the following series, Takisawa only writing a few episodes of V3, and Shimada, a few episodes of V3 and an episode of X. However, in all series starting with V3, Seirou Suzuki, who was a minor writer in the first Kamen Rider series (he wrote 5 episodes), became the most important writer in the follwoign series, writing a lot of episodes of V3, X, Amazon (in this case, even more than Igami), and Stronger. He almost feels like a co-main writer, notably in X, Amazon and Stronger, when he wrote almost (or even more) episodes than Igami. It's also noticeable that there are several writers who only wrote one episode in a series.