B-Club Hakaider Four Set

I've been spying this B-Club Hakaider Set for a while. I'm not sure when it was released. I think it's been a few years. Made by B-Club in 1:12 scale which is the perfect scale if you ask me. They are kinda like action figures without any action as they are really Polystone statues essentially which is kind of a bummer, but still cool nonetheless. extremely detailed, but a bit fragile. The tires are rubber and some of the accessories are plastic so it's not completely polystone, but you can't take the figures off the bike or pose them. The box the set came in was huge and it was a pretty expensive set, but still I think I paid less than retail. So what's the dealio with the Hakaider Four? He's Kikaida's doppelganger:

Saburo/Hakaider: Another android, considered as Jiro's "younger brother" as he was also made by Professor Komyoji; ironically, it is later revealed that he is Professor Komyoji. While Jiro was made by Dr. Komyoji voluntarily, Saburo was one of the Hakaider androids Komyoji was forced to make under the dominance of DARK to "correct his mistake" by destroying Kikaider. Unlike the other Hakaiders made, Saburo is a cyborg. Since Gill had Dr. Komyoji's brain transplanted into the very android he created, it was his trump card against Jiro. Hakaider almost succeeded in killing Kikaider, when Komyoji's brain override Saburo's systems momentarily and helped get Kikaider and the others into DARK HQ. By the time Saburo resumed control, Gill no longer needed him & had the other Hakaider's blast the cyborg's head off (Kikaider, however, saved Komyoji's brain for Mitsuko). But Saburo, headless, was still active & grabbed Gill by the throat as DARK HQ exploded. However, later on, Professor Gill's own brain somehow wound up in Hakaider, thus making him known as Gill-Hakaider.
The basis of Hakaider's name is the same as that of Kikaider, except that kikai, "machine," is replaced with hakai, "destruction."
"Saburo" is a Japanese given name meaning "third son."
In the 1971, Kamen Rider manga, another one of Ishinomori's creations, featured a Hakaider in which Hongo Takeshi, the first Kamen Rider, was killed and his brain implanted into an android body.
Saburo announces his presence by whistling.
Hakaider uses a gun, Hakaider Shot, as a weapon, but he feels that hand-to-hand combat is more honorable, unless his foe is either cowardly or defeated.
Saburo uses a knife, Destruction Blade, as a weapon and henshin (transformation) device. When Saburo transforms into Hakaider, Destruction Blade transforms into Hakaider Shot.
In 1995, Hakaider got to star in his own movie as an anti-hero in a post-apocalyptic world, but the film did poorly at the box office.
Hakaider was George Lucas' inspiration for Darth Vader

The Hakaider Squad: When Hakaider returned from the dead as "Gill Hakaider" (with Professor Gill's brain, instead of Komyoji's), he created three other Hakaiders from three DARK scientists to serve as his aides; Red, Blue and Silver Hakaiders. All four Hakaiders combine into a singular robot monster Gattaider. The Three Hakaiders sacrificed themselves so their leader can escape. In the live-action version, all four Hakaider also transformed into separate robot monsters; Gill, Red, Blue and Silver Hakaider transformed into Black Dragon (which looks like King Ghidorah), Red Centipede, Blue Alligator and Silver Shrimp, respectively.
Gattaider is based on gattai ("combine").